Advanced Techniques & Methods Flashcards
7 cards from real CFP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Advanced Techniques & Methods flashcards as text
What is the primary purpose of using a gray card when setting white balance in forensic photography?
Answer: To ensure accurate color reproduction under varying lighting conditions
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.
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:
Answer: A black background to maximize contrast with the white powder
A black background provides maximum contrast against white fingerprint powder, making ridge detail clearly visible for examination and comparison.
Which photogrammetry technique allows a forensic photographer to create a measurable 3D reconstruction of a crime scene from photographs?
Answer: Structure from Motion (SfM)
Structure from Motion (SfM) uses overlapping photographs taken from multiple angles to compute a 3D point cloud and measurable model of the scene.
When photographing a dark interior crime scene with mixed lighting (daylight from windows and incandescent bulbs), the best approach is:
Answer: Shoot RAW and use custom white balance or correct in post-processing
Shooting in RAW format preserves all color data, allowing accurate white balance correction in post-processing to handle multiple conflicting light sources.
In close-up forensic photography of tool mark evidence, which lighting technique best reveals surface texture and depth of marks?
Answer: Oblique or raking light positioned at a low angle to the surface
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.
When a forensic photographer captures images for use in photogrammetric analysis, the minimum recommended overlap between adjacent photographs is:
Answer: 60–80%
A 60–80% overlap between frames ensures sufficient common feature points for photogrammetric software to accurately compute spatial measurements and 3D models.
Which technique is most effective for photographing a latent fingerprint on a curved glass bottle without distortion?
Answer: Position the camera lens parallel to the tangent of the curved surface at the fingerprint location
Positioning the camera lens parallel to the tangent of the curved surface at the fingerprint location minimizes perspective distortion and ensures accurate ridge detail reproduction.