CFP Forensic Photographer Camera Settings & Exposure Control 1 — Questions and Answers
Question 1: Which aperture setting provides the greatest depth of field for capturing an entire crime scene in sharp focus?
- f/1.8
- f/2.8
- f/11 (Correct answer)
- f/4
Correct answer: f/11
A small aperture like f/11 maximizes depth of field, ensuring both near and far elements of a crime scene remain in sharp focus.
Question 2: What ISO setting is generally recommended as a starting point when photographing a well-lit outdoor crime scene?
- ISO 3200
- ISO 1600
- ISO 100 (Correct answer)
- ISO 800
Correct answer: ISO 100
ISO 100 minimizes digital noise and maximizes image quality in well-lit conditions, which is ideal for capturing fine evidentiary detail.
Question 3: A forensic photographer uses a fast shutter speed of 1/500s indoors. What is the most likely consequence?
- Motion blur on the subject
- Overexposed image
- Underexposed image (Correct answer)
- Increased depth of field
Correct answer: Underexposed image
A very fast shutter speed indoors admits very little light, resulting in an underexposed image that may fail to capture critical evidentiary detail.
Question 4: Which metering mode is most appropriate when photographing a single piece of evidence against a bright background?
- Matrix/Evaluative metering
- Center-weighted metering
- Spot metering (Correct answer)
- Highlight-weighted metering
Correct answer: Spot metering
Spot metering reads only the small area around the subject, preventing the bright background from causing the evidence to be underexposed.
Question 5: What is the primary benefit of shooting in RAW format rather than JPEG for forensic photography?
- Smaller file sizes for easier storage
- Faster burst rate for action shots
- Maximum image data retained for post-processing adjustments (Correct answer)
- Automatic white balance correction
Correct answer: Maximum image data retained for post-processing adjustments
RAW files retain all unprocessed sensor data, allowing forensic examiners to make non-destructive adjustments to exposure and white balance while preserving the original data.
Question 6: When photographing a dark bloodstain on a dark floor without a flash, which camera setting adjustment is most appropriate?
- Decrease shutter speed to allow more light (Correct answer)
- Increase shutter speed to freeze the scene
- Reduce ISO to minimum
- Narrow the aperture to f/16
Correct answer: Decrease shutter speed to allow more light
Decreasing the shutter speed (using a longer exposure) allows more light to reach the sensor, revealing detail in low-contrast dark areas.
CFP Forensic Photographer Camera Settings & Exposure Control 1
Which aperture setting provides the greatest depth of field for capturing an entire crime scene in sharp focus?