The shaft of the penis are highly irregular. There is a spherical distortion of the blending interpolation of the pixel which is mathematically impossible in normal digital camera shot. The photo have been altered.
If you blow up the picture you can see the even pattern of buffeting pixel that are resembling a wave vertically from the outside of the shaft and waves horizontally inside the shaft which is creating a spherical distortion of the picture overall.
That what I think of your picture of the cock!
I am a digital artist by trade.