[Newtolove]

actually to worry about size is redicolous and that diagram is a bit up the spout to say that anything under 4 3/4 of an inch in circumference is not enough is a nut,

if you are trying to relate to porn stars here's my take, from the point of view of a photographer I can tell you that they are definitely using short focal length lenses, these exaggerate close things and make slightly more distant things look smaller, this is because that is the optical perspective of short lenses to see the perspective of reality you need a 50 mm lens called a "normal" I bet most of those shows are done with 28 mm lenses.

secondly you always look smaller to yourself and from your optical viewpoint, you will look bigger to others than you think and a lot basically is to do with self esteem etc.

I tried this out I took pictures of myself with a 28 mm focal length lens and low and behold my normal size of 5.5-6 X 4.5 looked like those so called porn stars 7 X 7.

So if you want reassuring try it, photograph yourself with as little zoom as possible and preferable from the underside (from between your legs) and you will be surprised