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help us grow.  Tell me more ×  When reading about lenses,
sometimes I come along the term '3D pop' and I think I have a
rough idea about what it means; but I'd love to have a precise
or scientific explanation (optics) of it.  Examples and tips
welcome! :D  share|improve this question Only Zeiss lenses
create popping 3D photos, I'm afraid it's a trade secret ;) – 
Matt Grum Aug 7 at 9:30 @MattGrum Not so! Pentax's FA Limited
series of lenses does too, although every True Loyal Pentaxian
knows that the secret was callously discarded for the designed-
for-digital DA series. –  mattdm Aug 7 at 13:04 add comment  1
Answer  up vote 11 down vote accepted  All conventional
photographs are 2D representations of 3D scenes. Our brain
creates the illusion of depth based on cues from the image. This
process is easily manipulated, see forced