What's the quality that gives some lenses (like Minolta G) a "3D" look?

While some lenses have different coatings that give them "that look", it's mostly the physics of the shot that gives it the 3D illusion - f/l vs aperture and distance from cam to subject to background.

This one has both OOF foreground and background due to long f/l (400mm), fairly wide apeture for the distance (f/5.6) and good distance rations from foreground-subject-background:

This one has no OOF foreground. It still has some 3D look, but not as much as the previous one. These are with the 70-400G lens, so is fairly high quality with good micro-contrast as well. It all adds up and the more of these qualities and features are present, the better. I don't think it matters the brand of lens - just that the image is put together properly with decent glass.

--
*Jerry*
Sony V1, H5, A350 and A77... Still learning...
'The camera is an instrument that teaches people how to see without a camera.'
-- Dorothea Lange
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