If you don't have a DOF scale in camera or on a manual lens, or don't use the correct manual focusing technique of back focusing severely and hunting forward until the tip of the nose is sharp at the same time as the eyes and ears, no amount of "3d pop" will save you from painstakingly focus peeping across the image (shit for landscapes! shit!) or just guessing, because most AF focuses your image so the field of sharp focus starts and ends with the eyeball or whatever the focus point is because it works by hunting back and forth to get the AF point in focus and nothing behind it. This is "the autofocus look" and it's painfully obvious once you start seeing it.
>>4160151Reflection is the only thing theoretically doing shit here. The coating on the front isn't always the coating on the back and internal elements may be uncoated in the name of the T stop or some slight effect somewhere else. Internal reflections, which worsen with outdoor photos and the use of strong strobes/HSS flash, can appear as a solid wall of veiling glare rather than ghosting and is like dropping the contrast slider in a way that us non-recoverable.
Many sony, nikon, and zeiss lenses suffer from this. You could call it the tourist zoom look, or the sony GM look, not just the sigma look.
Refraction and diffraction definitely have nothing to do with this also I like how you went from pop rendering and photons AKA light particles to reflections after I told you about that some time ago