Product Photography Camera Settings and Lenses 4 — Questions and Answers
Question 1: Which lens focal length is most commonly recommended as an all-purpose focal length for product photography on a full-frame camera?
- 24mm
- 50mm
- 100mm (Correct answer)
- 200mm
Correct answer: 100mm
A 100mm (or 90–105mm) lens renders products with minimal perspective distortion and provides comfortable working distance, making it an industry standard.
Question 2: In a tethered shooting workflow, the camera is connected to a computer primarily to:
- Increase the camera's ISO performance
- View images immediately on a large screen for real-time quality control (Correct answer)
- Transfer files wirelessly to cloud storage
- Control strobe power remotely
Correct answer: View images immediately on a large screen for real-time quality control
Tethering sends images directly to a computer screen, allowing the photographer and client to evaluate sharpness, color, and composition on a calibrated monitor in real time.
Question 3: What is 'mirror lockup' (MLU) used for in studio product photography?
- Preventing the mirror from reflecting studio lights into the lens
- Reducing camera vibration caused by the mirror slap before a long exposure (Correct answer)
- Locking the mirror in live view mode permanently
- Preventing the mirror from fogging in cold environments
Correct answer: Reducing camera vibration caused by the mirror slap before a long exposure
Activating MLU flips the mirror before the shutter fires, eliminating the micro-vibration from mirror slap that can blur fine product details in macro shots.
Question 4: A photographer notices chromatic aberration (color fringing) on the edges of a glass product. The best in-camera fix is to:
- Increase shutter speed
- Stop down the aperture to f/11 or f/16 (Correct answer)
- Switch to a higher ISO
- Enable high-speed sync
Correct answer: Stop down the aperture to f/11 or f/16
Stopping down the aperture reduces chromatic aberration because the center of the lens, which is used more at smaller apertures, has fewer aberrations than the edges.
Question 5: When using live view to compose a product shot, which focusing method gives the highest precision for a static subject?
- Continuous autofocus (AI Servo / AFC)
- Face-detection autofocus
- Contrast-detection autofocus with manual fine-tuning at full magnification (Correct answer)
- Single-shot autofocus at center point
Correct answer: Contrast-detection autofocus with manual fine-tuning at full magnification
Contrast-detection AF in live view with 5–10x magnification confirmation gives the most precise focus on a stationary product.
Question 6: What is the purpose of using a 'gray card' before a product photography session?
- To set exposure compensation
- To create a custom white balance reference for accurate color reproduction (Correct answer)
- To measure strobe output in watt-seconds
- To calibrate the camera's autofocus system
Correct answer: To create a custom white balance reference for accurate color reproduction
Photographing an 18% gray card under your shoot lighting lets you set a precise custom white balance, ensuring product colors are accurately reproduced.
Question 7: When shooting products on a pure white background for e-commerce, overexposing the background by about 2 stops compared to the subject is called:
- High-key lighting
- Backlight blending
- Background blowout technique (Correct answer)
- Rim lighting
Correct answer: Background blowout technique
The background blowout technique intentionally overexposes the white sweep or background so it renders as pure white (255,255,255), simplifying post-processing.
Product Photography Camera Settings and Lenses 4
Which lens focal length is most commonly recommended as an all-purpose focal length for product photography on a full-frame camera?