Product Photography Lens Selection for Products 3 — Questions and Answers
Question 1: What is 'lens breathing' and why does it matter for product photography video?
- The lens fogging from temperature changes
- A change in field of view when adjusting focus (Correct answer)
- Flare caused by bright light sources
- Chromatic aberration on bright edges
Correct answer: A change in field of view when adjusting focus
Lens breathing causes the framing to subtly zoom when focus shifts, which is distracting in video product showcases.
Question 2: A photographer wants to shoot a flat lay of food products. Which lens attribute helps keep the entire scene in focus uniformly?
- Very short minimum focusing distance
- Long focal length above 200mm
- Moderate focal length with small aperture (Correct answer)
- Maximum aperture of f/1.2
Correct answer: Moderate focal length with small aperture
A moderate focal length like 50–85mm combined with a small aperture (f/8–f/11) maximizes depth of field for flat lay shots.
Question 3: Which type of lens aberration creates colored fringing on high-contrast edges of products, and how is it best addressed?
- Spherical aberration, fixed by stopping down
- Chromatic aberration, corrected by using apochromatic glass elements (Correct answer)
- Coma, fixed by a polarizing filter
- Vignetting, corrected by a UV filter
Correct answer: Chromatic aberration, corrected by using apochromatic glass elements
Chromatic aberration produces color fringing and is minimized with apochromatic (APO) lens designs that align color wavelengths.
Question 4: For packaging photography where the front label and back label of a bottle must both appear sharp, which technique works best?
- Use a wide-angle lens at f/1.8
- Focus stacking multiple shots at different focus distances (Correct answer)
- Use a 14mm ultra-wide at f/22
- Shoot with a fisheye lens
Correct answer: Focus stacking multiple shots at different focus distances
Focus stacking merges multiple images focused at different depths to achieve sharpness across the entire product.
Question 5: A lens with Internal Focusing (IF) is preferred in studio product photography primarily because:
- It zooms in automatically
- The physical length doesn't change while focusing, avoiding air movement near the product (Correct answer)
- It provides better low-light performance
- It eliminates the need for a tripod
Correct answer: The physical length doesn't change while focusing, avoiding air movement near the product
Internal focusing keeps the lens barrel length constant, preventing air disturbance near delicate product setups or styling.
Question 6: What effect does shooting with a 24mm wide-angle lens close to a bottle product have on its appearance?
- It compresses the bottle making it appear shorter
- It elongates and distorts the bottle shape (Correct answer)
- It creates perfect parallel lines
- It reduces reflections on the surface
Correct answer: It elongates and distorts the bottle shape
Wide-angle lenses used close to subjects introduce barrel distortion, making cylindrical products appear unnaturally tall or bulging.
Question 7: Which lens coating type is most beneficial when photographing highly reflective products like chrome hardware?
- UV coating to block ultraviolet light
- Multi-layer anti-reflective coating to reduce internal flare (Correct answer)
- Hydrophobic coating to repel moisture
- Infrared blocking coating
Correct answer: Multi-layer anti-reflective coating to reduce internal flare
Multi-layer anti-reflective coatings minimize internal lens flare and ghosting, which are common when shooting bright reflective surfaces.
Product Photography Lens Selection for Products 3
What is 'lens breathing' and why does it matter for product photography video?