Showing posts with label Aperture. Show all posts
Showing posts with label Aperture. Show all posts

05 September 2025

The Aperture of Awareness

A Philosophical and Photographic Inquiry

The Aperture of Awareness

Index:
  1. Introduction
  2. The Photographic Aperture: Technical and Expressive Dimensions
  3. Awareness in Philosophy
  4. Awareness in Psychology
  5. The Dynamics of Adjustment
  6. The Existential Dimension
  7. Practical Applications
  8. Critical Reflections and Limitations
  9. Conclusion
  10. References

1. Introduction

"Awareness is one of the most fundamental aspects of human existence. It is through awareness that people perceive reality, form relationships, discover meaning, and navigate the uncertainties of life. Yet awareness is not static or uniform; it is fluid, expanding and contracting like the lens of a camera. The metaphor of a photographic aperture offers a powerful way to conceptualize this dynamic quality. In photography, aperture controls the flow of light and depth of field, shaping how reality is captured and interpreted. Similarly, an “aperture of awareness” regulates the openness and focus of human consciousness, influencing what is noticed, what is ignored, and how meaning is constructed.

This essay develops a comprehensive exploration of the Aperture of Awareness as both a philosophical and artistic concept. Drawing from phenomenology, existential philosophy, psychology, and photographic theory, it argues that awareness functions analogously to aperture: requiring ongoing adjustment between openness and focus. The essay proceeds in several parts. First, it introduces the photographic aperture as both a technical and expressive device. Second, it examines the philosophical and psychological traditions that have shaped our understanding of awareness. Third, it develops the metaphor of the Aperture of Awareness, exploring its implications for creativity, perception, and meaning-making. Fourth, it examines case studies in photography and art where this metaphor is embodied in practice. Fifth, it discusses the existential and practical dimensions of adjusting awareness in life. Sixth, it considers the limitations and critical challenges of the metaphor. Finally, it concludes by proposing the Aperture of Awareness as a guiding principle for living with intentionality, flexibility, and authenticity.

2. The Photographic Aperture: Technical and Expressive Dimensions

Aperture is central to photography, functioning as one of the three pillars of exposure alongside shutter speed and ISO (Hirsch, 2018). It refers to the adjustable opening in a camera lens that controls the amount of light reaching the sensor. Aperture is measured in f-stops, such as f/1.4, f/5.6, or f/16. A smaller f-number indicates a wider aperture, allowing more light to enter, while a higher f-number corresponds to a narrower aperture, restricting light. Beyond regulating exposure, aperture profoundly influences depth of field, determining how much of an image is in focus.

A wide aperture (e.g., f/1.8) produces shallow depth of field, isolating the subject against a blurred background. This technique draws the viewer’s attention to the subject, evoking intimacy, immediacy, and emotional presence. In contrast, a narrow aperture (e.g., f/16) produces deep depth of field, keeping foreground and background sharp. This setting is often used in landscape photography, emphasizing interconnectedness and contextual detail (Freeman, 2020).

Photographers use aperture not only as a technical setting but also as a means of visual storytelling. For example, Dorothea Lange’s iconic Depression-era portraits relied on wide apertures to draw attention to human resilience amid hardship. Ansel Adams, in contrast, used narrow apertures in his landscapes to highlight the vast interconnectedness of natural environments (Adams, 1985). Aperture thus mediates between light and meaning, shaping not only what is seen but how it is felt.

This dual function of aperture—technical and expressive—makes it a compelling metaphor for awareness. Just as photographers adjust aperture to regulate light and focus, humans must adjust awareness to balance openness, detail, and meaning in their lives.

3. Awareness in Philosophy

Philosophy has long grappled with the nature of awareness and its role in human existence. Phenomenology, pioneered by Edmund Husserl, places awareness at the center of its analysis. Husserl (1913/1982) argued that consciousness is always intentional, meaning it is directed toward something. Awareness is never empty but always about an object, event, or idea. This resonates with aperture: just as a camera lens is always oriented toward a subject, awareness is always directed toward phenomena.

Martin Heidegger (1927/1962) deepened this understanding by situating awareness within the concept of being-in-the-world. For Heidegger, awareness discloses the world as meaningful, but it does so from within a context, not as detached observation. In this sense, awareness is not a neutral window but a participatory engagement with existence. The aperture metaphor captures this: adjusting the lens not only alters technical exposure but transforms the very quality of the scene disclosed.

Existentialist philosophy further emphasizes the responsibility inherent in awareness. Jean-Paul Sartre (1943/1992) described consciousness as a form of nothingness—a radical openness that allows for choice and possibility. Yet this openness is also a burden, as individuals must constantly decide where to direct their awareness, excluding some possibilities in favor of others. Viktor Frankl (1946/2006) added that awareness of meaning, even in suffering, constitutes the foundation of freedom. To live is to adjust one’s aperture of awareness in ways that align with responsibility, values, and purpose.

Eastern philosophies also enrich the discussion. In Buddhism, awareness (sati) is cultivated through mindfulness, a practice of observing the flow of experience without attachment or aversion (Rahula, 1974). This resonates with the idea of widening the aperture of awareness to include the full spectrum of thoughts, sensations, and emotions. Taoist philosophy similarly emphasizes balance and flexibility, akin to adjusting aperture according to context (Loy, 1988).

Across traditions, awareness emerges as dynamic, selective, and existentially significant—qualities mirrored by aperture in photography.

4. Awareness in Psychology

Psychological research provides empirical grounding for the dynamics of awareness. William James (1890/1950) described consciousness as a “stream”, a continuous flow of thoughts and perceptions. This metaphor aligns with the photographer’s challenge of capturing fleeting moments of light and shadow.

Contemporary cognitive science emphasizes the role of attention networks in regulating awareness. Posner and Rothbart (2007) describe three core networks: alerting, orienting, and executive control. These networks determine which stimuli enter awareness and how they are processed. In this sense, attention functions like aperture, selectively allowing information into conscious processing.

Research on mindfulness highlights the benefits of widening awareness. Kabat-Zinn (1994) defines mindfulness as paying attention, in the present moment, without judgment. Studies show that mindfulness practices reduce stress, enhance emotional regulation, and improve well-being (Brown & Ryan, 2003; Siegel, 2007). Mindfulness parallels using a wide aperture—allowing diverse impressions into awareness without fixating on detail.

At the same time, narrow awareness is essential for focus and problem-solving. Kahneman (2011) distinguishes between fast, intuitive thinking (System 1) and slow, deliberate thinking (System 2). Narrow aperture corresponds to System 2, enabling careful analysis and precision. Creativity research underscores the need to oscillate between divergent (wide awareness) and convergent (narrow awareness) thinking (Sawyer, 2012).

Psychological flexibility—the capacity to shift between wide and narrow modes of awareness—is associated with resilience and adaptability (Kashdan & Rottenberg, 2010). This capacity reflects the very essence of aperture adjustment, confirming the metaphor’s psychological validity.

The Aperture of Awareness as Metaphor

The Aperture of Awareness metaphor integrates philosophical and psychological insights. Like aperture, awareness regulates both the quantity and quality of input. A wide aperture of awareness corresponds to openness, creativity, empathy, and receptivity. A narrow aperture of awareness corresponds to focus, precision, and discipline.

  • Wide aperture (low f-stop): promotes sensitivity, intuition, and creativity; risks overstimulation or distraction.
  • Narrow aperture (high f-stop): promotes clarity, order, and analysis; risks rigidity or tunnel vision.

The artistry of awareness lies in the ability to adjust between these modes. Just as photographers select aperture settings according to subject, light, and intention, individuals must adjust awareness to the demands of circumstance. This flexibility represents not only cognitive skill but existential wisdom.

5. Awareness and Perception in Art and Photography

The metaphor comes alive in the practices of photographers and artists. Ansel Adams’s landscapes, often shot at f/64, reflect deep depth of field and a philosophical commitment to totality (Adams, 1985). Henri Cartier-Bresson’s candid street photography, by contrast, captures fleeting “decisive moments” through careful framing and timing, often with shallower depth (Cartier-Bresson, 1999). Dorothea Lange’s portraits, using wide apertures, isolated human subjects against blurred contexts, emphasizing dignity amidst suffering (Ang, 2019).

In contemporary art, aperture continues to serve as a tool for expressing awareness. Portrait photographers use shallow depth to highlight individuality, while documentary photographers use deeper apertures to situate individuals within social contexts. In each case, aperture is not just a technical choice but a statement of how the photographer sees—and by extension, how awareness is directed.

Beyond photography, other art forms mirror aperture dynamics. Writers alternate between broad thematic exploration and focused detail. Musicians move between improvisational openness and disciplined structure. Painters shift between expansive brushstrokes and fine detailing. The creative process itself can be understood as the modulation of awareness, oscillating between openness and focus.

6. The Dynamics of Adjustment

The central lesson of the aperture metaphor is adjustability. No single aperture setting is correct in all circumstances. Similarly, no single mode of awareness is universally optimal. Life requires the flexibility to shift between openness and focus.

Mindfulness encourages widening awareness, cultivating acceptance of diverse experiences (Kabat-Zinn, 1994). Concentration practices cultivate narrow awareness, fostering precision and clarity. Effective functioning requires both. Overly narrow awareness leads to rigidity, stress, and disconnection from context. Overly wide awareness risks overwhelm, indecision, and distraction (Siegel, 2007).

Psychological flexibility is thus akin to aperture control—a skill that can be trained and refined. Leaders, artists, and everyday individuals alike benefit from cultivating this flexibility, enabling them to adapt awareness to the shifting demands of life.

7. The Existential Dimension

At its deepest level, the Aperture of Awareness addresses existential questions of being and freedom. Awareness discloses reality, but it does so selectively. To attend to one possibility is to exclude others. Sartre (1943/1992) emphasized this as the essence of freedom: consciousness is condemned to choose, to focus, and thereby to define itself.

Heidegger (1927/1962) argued that authentic existence requires owning one’s awareness, rather than allowing it to be absorbed by distraction or conformity. The aperture metaphor illustrates this: to live authentically is to consciously adjust awareness in alignment with one’s values and purposes.

Frankl (1946/2006) highlighted awareness of meaning as the key to resilience, even in suffering. The capacity to choose one’s focus, even when external circumstances cannot be controlled, exemplifies the existential significance of awareness as aperture.

Thus, the Aperture of Awareness becomes not only a cognitive or artistic principle but a profound existential orientation to life.

8. Practical Applications

The metaphor has practical applications across diverse domains:

  • Mindfulness and Mental Health: Expanding awareness reduces stress and fosters resilience (Brown & Ryan, 2003; Siegel, 2007).
  • Creativity: Alternating between wide and narrow awareness enhances innovation (Csikszentmihalyi, 1996; Sawyer, 2012).
  • Education: Teachers can foster both broad conceptual understanding and focused analytical skills by cultivating awareness flexibility (Biesta, 2010).
  • Leadership: Leaders must widen awareness to include vision and narrow it to operational detail (Heifetz et al., 2009).
  • Technology: In an age of digital distraction, aperture becomes a metaphor for managing attentional flow in online environments (Carr, 2010).
  • Therapy: Psychotherapy often involves helping clients adjust awareness—broadening it to include suppressed feelings or narrowing it to focus on actionable change (Hayes, Strosahl, & Wilson, 2011).

In each case, the Aperture of Awareness provides a framework for balancing openness and focus in pursuit of well-being, creativity, and meaning.

9. Critical Reflections and Limitations

While powerful, the metaphor has limitations. First, it risks oversimplification. Human awareness is more complex than a mechanical aperture, involving unconscious processes, emotions, and cultural contexts. Second, aperture is primarily visual, whereas awareness encompasses multisensory and affective dimensions. Third, the metaphor may suggest a false dichotomy between wide and narrow, whereas awareness often involves hybrid states.

Nevertheless, metaphors need not be perfect to be useful. As Lakoff and Johnson (1980) argue, metaphors structure thought by highlighting some aspects of experience while hiding others. The Aperture of Awareness illuminates flexibility, selectivity, and intentionality in consciousness, even if it cannot capture every dimension.

10. Conclusion

The Aperture of Awareness is a rich metaphor that bridges photography, philosophy, and psychology. Like a lens adjusting to light, awareness must continually modulate between openness and focus. This modulation shapes not only perception but also meaning, creativity, and authenticity.

Through the lens of philosophy, awareness appears as intentional, selective, and existentially significant. Through psychology, it emerges as dynamic, flexible, and central to well-being. Through photography and art, it is embodied in creative practice, shaping how reality is disclosed and interpreted.

To live with an Aperture of Awareness is to embrace the artistry of adjustment—knowing when to open wide to embrace possibility and when to narrow for clarity and depth. It is to recognize that awareness, like light, not only illuminates the world but shapes the way it is seen. In this sense, the Aperture of Awareness becomes both a metaphor and a practice, guiding individuals toward more intentional, flexible, and authentic lives." (Source: ChatGPT 2025)

11. References

Adams, A. (1985). Examples: The making of 40 photographs. Little, Brown.

Ang, T. (2019). Photography: The definitive visual history. DK Publishing.

Biesta, G. (2010). Good education in an age of measurement: Ethics, politics, democracy. Routledge.

Brown, K. W., & Ryan, R. M. (2003). The benefits of being present: Mindfulness and its role in psychological well-being. Journal of Personality and Social Psychology, 84(4), 822–848. https://doi.org/10.1037/0022-3514.84.4.822

Carr, N. (2010). The shallows: What the Internet is doing to our brains. W. W. Norton.

Cartier-Bresson, H. (1999). The mind’s eye: Writings on photography and photographers. Aperture. (Original work published 1952)

Csikszentmihalyi, M. (1996). Creativity: Flow and the psychology of discovery and invention. HarperCollins.

Frankl, V. E. (2006). Man’s search for meaning. Beacon Press. (Original work published 1946)

Freeman, M. (2020). The photographer’s eye: A graphic guide. Routledge.

Goleman, D. (1995). Emotional intelligence. Bantam Books.

Hayes, S. C., Strosahl, K. D., & Wilson, K. G. (2011). Acceptance and commitment therapy: The process and practice of mindful change (2nd ed.). Guilford Press.

Heidegger, M. (1962). Being and time (J. Macquarrie & E. Robinson, Trans.). Harper & Row. (Original work published 1927)

Heifetz, R. A., Grashow, A., & Linsky, M. (2009). The practice of adaptive leadership: Tools and tactics for changing your organization and the world. Harvard Business Press.

Hirsch, R. (2018). Light and lens: Photography in the digital age (3rd ed.). Routledge.

Husserl, E. (1982). Ideas pertaining to a pure phenomenology and to a phenomenological philosophy (F. Kersten, Trans.). Springer. (Original work published 1913)

James, W. (1950). The principles of psychology (Vol. 1). Dover Publications. (Original work published 1890)

Kabat-Zinn, J. (1994). Wherever you go, there you are: Mindfulness meditation in everyday life. Hyperion.

Kahneman, D. (2011). Thinking, fast and slow. Farrar, Straus and Giroux.

Kashdan, T. B., & Rottenberg, J. (2010). Psychological flexibility as a fundamental aspect of health. Clinical Psychology Review, 30(7), 865–878. https://doi.org/10.1016/j.cpr.2010.03.001

Lakoff, G., & Johnson, M. (1980). Metaphors we live by. University of Chicago Press.

Loy, D. (1988). Nonduality: A study in comparative philosophy. Yale University Press.

Posner, M. I., & Rothbart, M. K. (2007). Research on attention networks as a model for the integration of psychological science. Annual Review of Psychology, 58, 1–23. https://doi.org/10.1146/annurev.psych.58.110405.085516

Rahula, W. (1974). What the Buddha taught. Grove Press.

Sartre, J.-P. (1992). Being and nothingness (H. E. Barnes, Trans.). Washington Square Press. (Original work published 1943)

Sawyer, R. K. (2012). Explaining creativity: The science of human innovation (2nd ed.). Oxford University Press.

Siegel, D. J. (2007). The mindful brain: Reflection and attunement in the cultivation of well-being. W. W. Norton & Company.

12. Image: Crafted by Microsoft Copilot

31 August 2025

Best Apertures for Birds in Flight

The Best Aperture for Birds in Flight Photography Depends on a Complex Interplay of Factors, including Bird Size, Lens Quality, Light Availability, and Desired Background Effect

Best Apertures for Birds in Flight
Yellow-Billed Duck In Flight Woodbridge Island @ f5.6 with a 400mm Lens

Abstract

"Birds in flight photography is one of the most demanding and rewarding genres within wildlife photography. Achieving sharp, well-exposed images of birds in motion requires a deep understanding of camera settings, especially aperture. The aperture setting directly influences depth of field, exposure, and image sharpness—key elements for successful bird-in-flight shots. This report explores the optimal aperture settings for birds in flight photography, analyzing variables such as bird size, light conditions, background, lens choice, and camera sensor size. It also discusses the trade-offs between aperture, shutter speed, and ISO, and presents recommendations based on expert opinions and field-tested techniques.

Introduction

Capturing birds in flight (BIF) is a skill-intensive form of photography that blends technical precision with artistic vision. Among the fundamental camera settings, aperture plays a pivotal role in determining the success of a shot. The choice of aperture affects depth of field (DOF), sharpness, and the amount of light reaching the camera sensor, all of which contribute to freezing motion and isolating the subject from the background. This report discusses best practices and scientifically supported guidance on choosing the right apertures for BIF photography.

Understanding Aperture in Photography

Aperture refers to the size of the lens opening through which light passes into the camera. Measured in f-stops (e.g., f/2.8, f/5.6, f/8), a lower f-number corresponds to a wider aperture, allowing more light to enter. Conversely, a higher f-number indicates a smaller aperture, reducing light intake but increasing the depth of field (Peterson, 2020). In BIF photography, striking a balance between a sufficiently wide aperture to ensure fast shutter speeds and a narrow enough aperture for adequate DOF is essential.

Challenges in Birds in Flight Photography

Photographing birds in flight poses several unique challenges:
  • Rapid Movement: Birds can fly at speeds exceeding 40–50 mph, necessitating fast shutter speeds.
  • Varying Light Conditions: Birds may fly against bright skies or shaded forests.
  • Distance and Perspective: Shooting from varying distances impacts focus accuracy and DOF
  • Background Separation: Isolating the bird from distracting backgrounds is often desired.

Given these complexities, aperture selection becomes a critical factor in image quality.
General Aperture Guidelines for Birds in Flight

f/4 to f/6.3: The Ideal Range

Most expert bird photographers agree that an aperture range of f/4 to f/6.3 strikes the best balance for Birds in Flight  photography. At these settings:
  • The aperture is wide enough to let in ample light, supporting faster shutter speeds.
  • There is enough DOF to maintain focus on the entire bird, especially if wings are spread.
  • The background can still be rendered smoothly out of focus (bokeh) for subject separation.

This range is supported by field guides and wildlife photography tutorials (Chalmers, 2023; Shaw, 2019).

Factors Influencing Aperture Choice
  • Bird Size and Distance
Larger birds such as eagles or herons require more DOF to keep the entire body in focus. For these subjects, f/6.3 to f/8 may be more appropriate. Smaller birds, such as swallows or terns, often allow for f/4 to f/5.6, especially when shot closer or with long lenses.
  • Lens Type and Quality
Professional telephoto lenses like the Canon EF 500mm f/4L or Nikon 600mm f/4 are designed to deliver maximum sharpness even at wide apertures. Therefore, using f/4 or f/5.6 is viable without compromising image quality. Budget zoom lenses often produce sharper images when stopped down slightly, making f/6.3 to f/8 preferable.
  • Lighting Conditions
Bright, sunny conditions afford the flexibility to stop down to f/6.3 or f/8, enhancing sharpness and DOF. In overcast or shaded environments, wider apertures such as f/4 may be necessary to avoid raising ISO excessively or sacrificing shutter speed (Kelby, 2017).
  • Background Considerations
Photographers seeking creamy, blurred backgrounds (shallow DOF) often shoot at f/4 or f/5.6, particularly when the background is busy or distracting. Conversely, if background context is important (e.g., birds in habitat), a narrower aperture like f/8 may be used.

Environmental Variables for Improved Birds in Flight Photography

Aperture and Depth of Field (DOF)

DOF is crucial in BIF photography to ensure that the entire bird—head, wings, and tail—is sharply in focus. At longer focal lengths (e.g., 400–600mm), DOF becomes extremely shallow, especially at wide apertures. For instance:
  • At 500mm and f/4, DOF at 30 meters is approximately 0.9 meters.
  • At 500mm and f/8, DOF doubles to around 1.8 meters.

Thus, f/5.6 to f/8 provides a better margin for focus error and ensures greater sharpness across the bird’s body (Langford & Fox, 2019).

Aperture, Shutter Speed, and ISO Trade-Offs

To freeze motion, shutter speeds above 1/2000s are typically needed. Achieving this with adequate exposure in varying light demands wide apertures or increased ISO. For example:
  • In bright daylight: f/5.6, 1/2500s, ISO 400 is feasible.
  • In shade: f/5.6, 1/2000s may require ISO 1600+.

Using f/4 or f/5.6 allows faster shutter speeds at lower ISO, reducing noise. However, stopping down to f/6.3 or f/8 may improve sharpness if light permits (Freeman, 2022).

Camera Sensor Size and Aperture

Full-frame sensors (e.g., Canon R5, Nikon Z9) gather more light and perform better at high ISOs compared to APS-C sensors (e.g., Canon R7, Nikon D500). On APS-C cameras, a wider aperture (e.g., f/4) may be necessary to maintain low noise and fast shutter speeds.

However, due to crop factor, APS-C sensors provide more DOF at the same f-stop and field of view, making f/5.6 to f/6.3 a practical choice for both sharpness and noise control (Busch, 2022).

Field Examples and Case Studies

  • Case Study 1: Large Bird – African Fish Eagle
Using a Canon 500mm f/4 lens on a full-frame body, Vernon Chalmers recommends f/5.6 for sharp focus across the wingspan while achieving good background separation. This setting supports shutter speeds over 1/2000s in daylight, ideal for capturing dynamic wing positions (Chalmers, 2023).
  • Case Study 2: Small Bird – Barn Swallow
Photographing fast-moving swallows requires f/4 to f/5 to allow maximum light and shutter speed of 1/3200s. Although the DOF is shallow, precise focus on the head suffices due to the small body size (Shaw, 2019).


Expert Recommendations

  • Scott Kelby (2017) suggests using f/5.6 as a starting point for most birds in flight due to its balance of light and depth.
  • Arthur Morris, a veteran bird photographer, frequently uses f/4 to f/5.6, depending on light and subject distance.
  • Vernon Chalmers (2023) emphasizes lens quality - high-end lenses allow wider apertures without loss of sharpness

Summary of Recommended Aperture Settings

Summary of Recommended Aperture Settings

Conclusion:

The best aperture for birds in flight photography depends on a complex interplay of factors, including bird size, lens quality, light availability, and desired background effect. While f/5.6 emerges as the most versatile setting, ranges between f/4 and f/8 are commonly used by professionals. Understanding how aperture interacts with depth of field, shutter speed, and ISO is crucial to mastering this genre. For photographers seeking to improve their bird-in-flight shots, experimenting within the f/4 to f/6.3 range - adjusting based on conditions - offers the best results." (Source" ChatGPT 2025)

References

Busch, D. D. (2022). David Busch’s Canon EOS R7 Guide to Digital Photography. Rocky Nook.

Chalmers, V. (2023). Canon EOS R Series Birds in Flight Settings. Vernon Chalmers Photography. https://www.vernonchalmers.photography

Freeman, M. (2022). The Photographer’s Eye: A Graphic Guide. Focal Press.

Kelby, S. (2017). The Digital Photography Book: Part 1 (2nd ed.). Peachpit Press.

Langford, M., & Fox, R. (2019). Langford’s Basic Photography (10th ed.). Routledge.

Peterson, B. (2020). Understanding Exposure (4th ed.). Amphoto Books.

Shaw, C. (2019). Mastering Bird Photography: The Art, Craft, and Technique of Photographing Birds and Their Behavior. Rocky Nook.

Report Compiler: ChatGPT 2025

Image Copyright: Vernon Chalmers Photography

Image: Vernon Chalmers Birds in Flight Woodbridge Island, Cape Town

20 August 2025

About the Quality of Light... for Bird Photography

Vernon Chalmers Birds in Flight Photography Training Cape Town

The Quality of Light... Little Egret in Flight Woodbridge Island, Cape Town
The Quality of Light... Little Egret in Flight Woodbridge Island, Cape Town

In the past I have written extensively and posted quite a few images of bird (in flight) photography in poor light conditions . As photographers we want the best possible light, but even the best light is not always best for our images. You may think.., 'Will I ever master the exposure inter-relationship conundrum with its almost infinite probability combinations and permutations?'

Often, with knowledge of exposure, light and experience of different conditions, the photographer will succeed. The cognitive awareness of subject (bird) behaviour, objectives, challenges and expectations in terms of specific outcomes will provide the eventual knowledge, experience, (own) behaviour, skills and techniques when allowing yourself to shoot any subject 'as is' (irrespective of the conditions).

The attached image (above) of the little egret at Woodbridge Island was photographed before 07:00 on a good quality light day. Even on a good light day in photographing predominantly white birds softer sun light is required - hence the fact this image was captured before 07:00 on a sunny morning.

If this image was taken at i.e. 09:00 the light would have been too bright over-exposing the white features of the bird.

With environmental factors in mind the photographer should shoot and enjoy every photography moment out there - and remember there is (as I often remind my students / clients) no such thing as a perfect photograph, the only 'perfection' that exist is your acceptance on what an 'ideal exposure' should / could be - the rest we can control... in terms of camera settings / distance / backgrounds - it will depend on the photographer's willingness to learn, plan, prepare and enjoy every occasion that should matter - at your own pace.

Light is one of the most important factors in any photography genre, but equally important is to accept the challenges when you're not in a position to plan for subjects and / or weather conditions.

Olive Thrush Garden Bird at Kirstenbosch in Good Light
Olive Thrush Garden Bird at Kirstenbosch in Good Light

Good light at Kirstenbosch for photographing small garden birds

The above olive thrush at Kirstenbosch Garden, Cape Town was photographed in good morning light. Often, even in good morning the light the small birds are surrounded by dark backgrounds that makes it challenging for photographing even in the best morning light.

I don't use Canon's Image Stabilization (IS) for flying birds, but for these birds I use a different camera and EF 100-400mm zoom lens with IS enabled in Manual Mode (f/5.6 - 6.3) Auto-ISO and the shutter speed slightly increased – double of what Aperture Priority Mode would provide at 400mm - to counter for any movement and or the probability that they may fly. Which I don't mind as it is part of the challenge to get them in flight.

I normally just use Av Mode at Kirstenbosch for flowers / landscape, but in these challenging conditions / birds in flight I use Manual Mode with a minimum of 1/1000s at 400mm. The birds in the shadows are obscured from direct sunlight exposure - something I started appreciated very quickly even in these small / still bird photography. One of the main reasons is that it limit over-exposure (too much light on the bird and / or the background - which slows down post-processing to reduce the over-exposed light spots and unnecessary glare on the bird).

Canon Camera / Lens Settings Woodbridge Island

  • Canon EOS 7D Mark II
  • EF 400mm f/5.6L USM (non-IS) Lens
  • Manual Mode
  • Auto-ISO: 400 /Aperture: f/5.6
  • Shutter Speed: 1/3200
  • AI Servo Mode: Case 1: Wide Zone
  • 10 fps High Speed Continuous Mode
  • No Lens IS (Not required)
  • Handheld

Canon Camera / Lens Settings Kirstenbosch National Botanical Garden
  • Canon EOS 70D
  • Canon EF 100-400mm f/4.5-5.6L IS USM Lens (Mark I)
  • Manual Mode: 400mm / f/5.6 / Auto- ISO: 640 / 1/1000s Shutter Speed
  • IA Servo Mode: 7 fps High Speed Continuous Mode (Zone AF)
  • Lens IS Switched on
  • Handheld

Lightroom Post-Processing
Adobe Photoshop Lightroom Classic: Cropping. Colour correction / slight noise reduction / lens profile correction and a few spot removals.

More About the Quality of Light for Bird Photography

"The quality of light is crucial for capturing stunning bird photographs.

Here are some key tips to help you make the most of natural light:

Golden Hour: The best time to photograph birds is during the golden hour, which is the hour after sunrise and the hour before sunset. The light during these times is soft, warm, and low in the sky, reducing harsh shadows and highlighting the birds’ colors beautifully.

Front Lighting: Position yourself so that the sun is behind you, illuminating the bird from the front. This helps to bring out the details in the bird’s plumage and ensures even lighting

Avoid Midday Sun: The light during midday is harsh and creates strong shadows, which can obscure details and make the bird look flat. If you must shoot during this time, try to find shaded areas or wait for some cloud cover to diffuse the light .

Backlighting for Artistic Shots: Backlighting, where the sun is behind the bird, can create dramatic silhouettes and highlight the edges of the bird’s feathers. This technique works well during the golden hour when the light is softer.

Overcast Days: Cloudy days provide diffused light, which is soft and even, reducing harsh shadows. This can be great for capturing fine details and colors without the risk of overexposure .

Use Reflectors: If the light is too harsh or uneven, you can use a reflector to bounce light onto the bird, filling in shadows and creating a more balanced exposure.
By understanding and utilizing these lighting techniques, you can significantly improve the quality of your bird photography." (Microsoft Copilot 2024)

Environmental Variables for Improved Birds in Flight Photography

Vernon Chalmers Birds / Birds in Flight Photography Training Intaka Island | Woodbridge Island

Vernon Chalmers Photography Training Cape Town

01 January 2025

Canon Aperture and Depth of Field Samples

Various Aperture Depth of Field Sample Images

Canon Aperture and Depth of Field Samples
With Canon EF-S 18-135mm IS STM lens

Aperture / Depth of Field Flower Image Samples

Close-up photos in / around Constantia, Century City, Durbanville and Milnerton Cape Town. (All images by Vernon Chalmers)

Objective: Demonstrating Depth of Field application and quality / level of background blur (bokeh) using different lenses with the Canon EOS 700D / Rebel T5i DSLR camera body.


Note: All garden and nature photos hand-held in Av mode (Aperture Priority) with or without external hot shoe flash. ISO's between ISO 100 - 400. Shutter speeds all automatically selected by camera. Some photos with Canon Extension Tube EF25 II or Canon 500D close-up lens.

Canon Equipment
  • Canon EOS 700D SLR camera body
  • Canon EF 50mm f/1.8 II prime lens
  • Canon EF-S 18-55mm f/3.5-5.6 IS STM lens
  • Canon EF-S 18-135mm f/3.5-5.6 IS STM lens
  • Canon EF-S 55-250mm f/4.5-5.6 IS II zoom lens
  • Canon Extension Tube EF25 II
  • Canon 500D close-up lens
  • Canon Speedlite 430EX II flash (TTL Mode)
  • Av Mode - Aperture Priority Settings
  • 50mm lens f/2.8-f/4.0
  • 18-135mm lens f./5.6
  • 55-250mm lens f/5.6
  • ISO 100 - 400
  • Shutter speed: various (automatic)
  • Image stabilsation on (EF-S lenses)
  • Zero post-processing (just crops)

Canon Aperture and Depth of Field Samples
Av Mode: f/8 / ISO 400 Canon Close-Up Filter / EF-S 55-250mm IS II Lens

Canon Aperture and Depth of Field Samples
Canon EF-S 18-135mm IS STM Lens f/5.6 ISO 400 (Flash)

Canon Aperture and Depth of Field Samples
Canon EF 50mm f/1.8 II lens f/16 ISO 400 (Flash)

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens f/5.6 ISO 120

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / 500D Close-up lens / 5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF 50mm f/1.8 II lens f/8 ISO 400 (Flash)

Canon Aperture and Depth of Field Samples
Canon EF-S 18-55 IS STM Lens f/11 ISO 200 (Flash)

Canon Aperture and Depth of Field Samples
Canon EF-S 18-135mm IS STM lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 18-135mm IS STM lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF 50mm f/1/8 II lens f/4.0 ISO 400

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / Extension Tube f/5.6 ISO 400 (Flash)

Canon Aperture and Depth of Field Samples
With Canon EF-S 55-250mm IS II lens / 500D Close-up lens / 5.6 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF-S 55-250mm IS II lens / 500D Close-up lens / f/6.7 ISO 100

Canon Aperture and Depth of Field Samples
Canon EF 50mm f/1.8 II lens f/4.0 ISO 400 (Flash)