As the title says, something related to visual images and sight.
Here I have drawn an image of comparison of different persons at IDENTICAL height of 1.7 m looks like when standing at different ranges.
The following formulae have been applied:
- Distance from point of view to object = object size * panel height in pixels/[object height in pixels*2*tan(70deg/2)]
- Object size = 2*tan(70deg/2) * distance from point of view to object * object height in pixels / panel height in pixels
(Human height is always 1.7 m and pixel height is meant to be 1000 px
I did make the panel 1250 px to illustrate the effect of the (2nd from left) character standing at higher pixel height than the panel height
The character standing at 1000 m away should appear as a dot at the horizon and therefore is meant not to be seen clearly.)
Tally - Standing distance
|Distance of character from camera (m)||Height of character in panel (px)|
So this should give a good estimate at how character standing distances should actually be portrayed.
For your reference, the farthest distance a human eye can detect a candle flame is 2.76 kilometers.