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 / 1.78(A/R) * 142.86 / 1000
2.89m
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
22 MP, A/R = 1.78
5500000 x 4
How many pixels represent 1m at 10m distance?.
Resolution at 10m
4 px/ 2.889 height
1 px/m
Full person height
4 / 2.889 * 1.82m
3 pixels
Person face height
4 / 2.889 *.3m
0 pixels
You can also calculate the depth-of-field for this scene by specifying the aperture.

References

portrait distance