Forensic Photography: Triad, ABFO Scale and Basic Practice
Published:
Questions
30
Duration
30 min
Faculty-reviewed
0
Updated
24 May 2026
About this mock
UGC-NET Forensic Science Paper II Unit VI drill on forensic photography at the foundations level. Items work through the photographic triad (overall establishing shot, mid-range contextual shot, and close-up detail shot) and why shooting in that fixed sequence prevents the viewer from losing spatial orientation as magnification increases. The ABFO No 2 scale is examined from its origins in forensic odontology (bite-mark documentation) through its L-shaped form, millimetre and centimetre graduations, and the requirement to place it precisely in the same focal plane as the evidence surface so that a true 1:1 reproduction ratio is achievable at the enlargement stage.
Camera fundamentals covered include the structural difference between DSLR and mirrorless bodies, full-frame versus APS-C sensor coverage, the aperture (f-number) and its effect on depth of field, shutter speed as the control for motion freezing, and the ISO triangle that balances sensitivity against noise. Lighting items distinguish the on-camera flash limitations at close range from the advantages of a ring flash for bite marks and wounds, and explain how oblique (raking) light at a low angle enhances surface topography in impression evidence such as tyre tracks and tool marks. Tripod and stabilisation items cover long-exposure and low-light scenes, mirror lock-up and remote shutter release, and the copy-stand setup for flat evidence photography.
Geometry items cover the orthogonal (perpendicular-axis) requirement for 1:1 documentation and how angular deviation introduces perspective distortion that invalidates scale comparisons. Indian CFSL practice items address photographs as expert opinion evidence under Section 39 of the Bharatiya Sakshya Adhiniyam 2023 (replacing Section 45 of the Indian Evidence Act 1872), chain-of-custody documentation for digital image files, cryptographic hash values (MD5 or SHA-256) for verifying file integrity, and the photo-log as part of the formal case record. Allow 30 minutes.
Sources & references
Questions in this mock are written and verified against the following sources. Citations are recorded per question and shown in the explanation after submission.
- cited in 21 questions
Robinson E M, Crime Scene Photography
Academic Press (Elsevier), 3rd Edition, Chapter on lighting for close-up forensic photography
- cited in 4 questions
Saferstein R, Criminalistics: An Introduction to Forensic Science
Pearson, 12th Edition, Chapter on impression evidence and forensic photography
- cited in 3 questions
Sharma B R, Forensic Science in Criminal Investigation and Trials
Universal Law Publishing, 5th Edition, Chapter on digital evidence and chain of custody
- cited in 1 question
Bharatiya Sakshya Adhiniyam 2023 (BSA 2023)
Government of India, Section 39: expert opinion, replacing Section 45 of the Indian Evidence Act 1872
Open source - cited in 1 question
Miller L and Massey J, The Crime Scene: A Visual Guide
Academic Press (Elsevier), 2nd Edition, Chapter 2: Documentation and photography
How our mocks are built
Questions are written and edited by the ForensicSpot team and cited from peer-reviewed forensic textbooks, official syllabi and primary case law. Each one is verified before publishing. Detailed explanations show after you submit, so the test stays a real test. See a mistake? Tell us.
Common questions
What does the Forensic Photography: Triad, ABFO Scale and Basic Practice mock cover?+
UGC-NET Forensic Science Paper II Unit VI drill on forensic photography at the foundations level. Items work through the photographic triad (overall establishing shot, mid-range contextual shot, and close-up detail shot) and why shooting in that fixed sequence prevents the viewer from losing spatial orientation as magnification increases. The ABFO No 2 scale is examined from its origins in forensic odontology (bite-mark documentation) through its L-shaped form, millimetre and centimetre graduati
How many questions and how long is the test?+
30 multiple-choice questions, 30 minutes total. Difficulty: easy. Tier: Premium.
Who is this mock for?+
Forensic science students and aspirants who want timed, exam-style practice with explanations and verified source citations on Multimedia Authentication and Deepfake Forensics, NET. Useful for postgraduate entrance preparation and for BSc / MSc forensic students testing their recall under time.
Are the questions reviewed?+
Each question carries a verified source citation. Faculty review for individual questions is in progress.
Do I need an account to take this mock?+
Yes, a free ForensicSpot account is required to start a timed attempt — this lets you save progress, see per-question explanations after submission, and track your topic-level performance over time.