CFP Advanced Techniques & Methods 3

Question 1

What is the primary purpose of using a gray card when setting white balance in forensic photography?

Accepted Answer

To ensure accurate color reproduction under varying lighting conditions

Answer

A gray card provides a neutral reference that ensures the camera renders colors accurately regardless of the ambient light source, which is critical for evidentiary color fidelity.

Question 2

A forensic photographer is tasked with capturing latent fingerprints dusted with white powder on a dark surface. The optimal background for comparison photography would be:

Accepted Answer

A black background to maximize contrast with the white powder

Answer

A black background provides maximum contrast against white fingerprint powder, making ridge detail clearly visible for examination and comparison.

Question 3

Which photogrammetry technique allows a forensic photographer to create a measurable 3D reconstruction of a crime scene from photographs?

Accepted Answer

Structure from Motion (SfM)

Answer

Structure from Motion (SfM) uses overlapping photographs taken from multiple angles to compute a 3D point cloud and measurable model of the scene.

Question 4

When photographing a dark interior crime scene with mixed lighting (daylight from windows and incandescent bulbs), the best approach is:

Accepted Answer

Shoot RAW and use custom white balance or correct in post-processing

Answer

Shooting in RAW format preserves all color data, allowing accurate white balance correction in post-processing to handle multiple conflicting light sources.

Question 5

In close-up forensic photography of tool mark evidence, which lighting technique best reveals surface texture and depth of marks?

Accepted Answer

Oblique or raking light positioned at a low angle to the surface

Answer

Oblique or raking light placed at a low angle creates shadows within the tool marks, revealing three-dimensional surface texture that is otherwise invisible under direct lighting.

(CFP) Certified Forensic Photographer Practice Test

(CFP) Certified Forensic Photographer Practice Test

CFP Advanced Techniques & Methods 3