Photo composition calculator

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

Frame

Equivalent focal length
85 mm * crop 1.5
128 mm
Multiplier
distance / focal distance
15.69
The scene is the size of what your camera can capture at 2m distance. This depends on the (equivalent) focal length of the lens.
Scene height
36mm / 1.5(A/R) * 15.69 / 1000
0.38m
Scene width
36mm * 15.69 / 1000
0.57m
This is what your frame will look like with a 182 cm (6 foot) person at 2 meter.

Resolution

Sensor resolution
24 MP, A/R = 1.5
6000 x 4000
How many pixels represent 1m at 2m distance?.
Resolution at 2m
4000 px/ 0.376 height
10638 px/m
Full person height
4000 / 0.376 * 1.82m
19362 pixels
Person face height
4000 / 0.376 *.3m
3191 pixels
You can also calculate the depth-of-field for this scene by specifying the aperture.

References

portrait distance