3D Scanning vs Photography
Forensic photography records appearance from the angles the photographer chose. 3D scanning records geometry from every angle, with appearance attached.
The University of Toronto tested the two head to head on full-body documentation: 26 minutes against 54, and measurements the photographs could not give.
No sensitive case details required.
Is 3D scanning better than photography for forensic documentation?
For measurement, yes: a scan is geometry that can be measured afterwards from any angle. In the University of Toronto comparison it was also faster — 26 minutes against 54 for a full external record. Photography remains the tool for specific close-up appearance.
How they compare
Compared on what each method leaves you with afterwards.
| 3D scanning (Artec Eva + Spider II)Colour geometry of the whole surface. | Forensic photographyAppearance from chosen angles. | |
|---|---|---|
| What is recorded | Geometry and colour, every angle | Appearance, from the angles taken |
| Time for a full body record | Under half an hour for the whole body | Nearly an hour for the same coverage |
| Measurement afterwards | Any distance, any angle, submillimetre | Only in the plane of the scale, approximate |
| New angle afterwards | Yes — rotate the model | No |
| Scale | Inherent in the data | A ruler in the frame |
| Choose this when | The record: complete, measurable, reviewable later. | Still right for specific appearance detail; no longer the whole record. |
Most offices keep photography for specific purposes and make the scan the complete record.
What the Toronto comparison measured
The University of Toronto compared 3D scanning against forensic photography for full external documentation of a body. The scan took 26 minutes; photography of the same coverage took 54. The scan also produced what the photographs could not: submillimetre colour geometry that could be measured afterwards, from any angle, by anyone with the file.
That is the essential difference. A photograph is a record of appearance at one angle under one light, with a scale that is only accurate in its own plane. A scan is a record of shape with appearance attached; a measurement not taken at the time is taken later. A distance between two injuries on a curved limb, the true size of a pattern injury, the position of an item relative to a wall — all measured, not estimated.
Photography does not disappear. Close-up appearance under controlled light, ultraviolet and infrared imaging remain photographic tasks. What changes is which one is the complete record.
The figures behind the verdict
See how a full-body 3D record compares with your photography protocol, minute for minute — book a demo.
Book a demoQuestions practitioners ask
Does the scan capture colour as well as a camera?
It captures colour texture with the geometry. Colour fidelity depends on the lighting at capture, as with photography; the difference is that the scan also holds shape.
Can we still take photographs?
Yes, and most offices do for specific detail and for alternative-light imaging. The scan becomes the complete record; photography becomes targeted.
Where does the 26 vs 54 figure come from?
From the University of Toronto comparison of 3D scanning against forensic photography for full-body documentation, published as an Artec case study.
Is the scan admissible like a photograph?
It is presented as a measured model or as views of it. Admissibility follows the court's rules on method and disclosure, as with any technical evidence.
Tell us about the work you do
A forensic application specialist will come back with the device that fits it, the accuracy to expect at that scale, and how the data reaches your existing workflow.