1:1 Photography
Definition
Macro photography at a reproduction ratio of 1:1, meaning the image on the camera sensor is the same physical size as the subject; the standard for latent print documentation before lifting.
- Reproduction ratio
- 1:1, image on sensor equals true subject size
- Category
- Macro photography technique
- Applied to
- Latent print documentation before lifting
Common questions
How is a 1:1 ratio actually verified in the field?+
A photographic scale or ruler is placed alongside the print at the same distance and angle; if the ruler's marked units reproduce at their true physical size in the image, the ratio is confirmed as 1:1.
Does the 1:1 requirement differ between film and digital cameras?+
The underlying principle is the same, the recorded image must equal the subject's true size at the sensor or film plane, but digital capture lets the examiner check the ratio immediately on the camera screen rather than after processing.
Related terms
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