focal length

[dpamplona]

Sure! I will try to be as clear as possible.

In normal cameras, eyes, etc, the size of the sensor is fixed and we can control manually (or automatically) the focal length. From that, the field of view of the image, is relatively easy to estimate. (If we assume the perspective tranform, then it is just the fov = 2*arctan(sensor_array_length/(2focal_length)))

In vizard, we can control easily the fov of the viewport, I would like to adjust the viewport size (in pixels) depending on the focal length. Can you help me?
Cheers,
Daniela