If I want a photo to match the human eye in terms of distance

Generally the focal length equivalent to the human eye is considered the normal. So, on APS-C it will be 35mm, on 35mm-full frame it'll be 50mm and on Medium format 80mm.

>>3097583
They all match the human eye.

People look different at different distances to the naked eye as well.
With a long focal length all you do is make a big picture of that people look like far away.
And with a short focal length you make a panorama, capturing what you can see if you turned your head a bit.

>>3097592
it's actually the diagonal for sensor size, so for full frame it's 42mm
so you have your choices of 35 & 50 with the occasional 40 being suggested. 35 will be slightly wider, 50 will be like a short tele and 40 the closest

I think all are equally boring but whatever floats your boat anon

>>3097583

Depends how far away you are. However I would tend towards medium format around 90-100mm as your field of view is from 2 eyes far apart - to which I think the medium format field of view shows best.

>>3097583
Depends how close you are to your subject.

"Perspective distortion" isn't a real thing, its just how close something is to you.

>>3097583
she looks like every single one of those to the human eye, so stop being a fucking idiot OP.