Question

What are the precautions taken during fingerprint photography?
A. The camera should be parallel to the fingerprint
B. The scale is to be used with the fingerprint for photography
C. The arranegnear light should be even on the fingerprint
D. Generally, ultra slow shutter speed is not preferable for fingerprint photography.

• A. A and B only
• B. B and D only
• C. A and D only
• D. B and C only

Hint:

For any forensic photography, remember two key rules: 1. No distortion: Keep the camera parallel to the evidence. 2. Record size: Always include a scale in the picture.

Answer 1

The Correct Option is A

Proper photography is essential for preserving fingerprint evidence.
Step 1: Evaluate each statement.
A. The camera should be parallel to the fingerprint: Correct. The camera lens must be perpendicular to the surface (and parallel to the plane of the print) to avoid perspective distortion. This ensures the fingerprint is recorded in its true shape and size.
B. The scale is to be used with the fingerprint for photography: Correct. A scale (ruler) must be placed on the same plane as the fingerprint and included in the photograph. This allows for creating 1:1 (life-size) prints for comparison.
C. The arranegnear light should be even on the fingerprint: The word "arranegnear" is likely a typo for "arranged near" or refers to a lighting technique. The principle is that lighting should be even and oblique (from the side) to maximize contrast and show the ridge detail, not necessarily just "even." The statement is ambiguously worded.
D. Generally, ultra slow shutter speed is not preferable: This statement is about what is *not* done. While true (very slow speeds can lead to blur from camera shake), statements A and B are positive descriptions of necessary precautions. In the context of "what precautions are taken," A and B are the most direct and essential rules. Also, using a tripod allows for slow shutter speeds if necessary for depth of field and low light, so this isn't a universal precaution in the same way as A and B.

Step 2: Conclude. Statements A and B are fundamental and universally accepted precautions for forensic fingerprint photography. Therefore, "A and B only" is the best choice.