Photo composition calculator

Use this calculator to convert your lens and camera characteristics, together with subject distance, into the composition of the frame.

Frame

Multiplier
distance / focal distance
142.86
The scene is the size of what your camera can capture at 10m distance. This depends on the (equivalent) focal length of the lens.
Scene height
36mm / 1.5(A/R) * 142.86 / 1000
3.43m
Scene width
36mm * 142.86 / 1000
5.14m
This is what your frame will look like with a 182 cm (6 foot) person at 10 meter.

Resolution

Sensor resolution
24 MP, A/R = 1.5
6000 x 4000
How many pixels represent 1m at 10m distance?.
Resolution at 10m
4000 px/ 3.429 height
1167 px/m
Full person height
4000 / 3.429 * 1.82m
2123 pixels
Person face height
4000 / 3.429 *.3m
350 pixels
You can also calculate the depth-of-field for this scene by specifying the aperture.

References

portrait distance