This question is limited to primes because zooms, by their nature, are high element lenses. We, myself included, have been sold on wanting high megapixel sensors and on buying the sharpest modern lenses which will have many glass elements to provide all the correction needed. We look at images zoomed to 100% and want to see great detail. But that is not how an image is really seen by the normal viewer. They see the whole image at once. Some people argue we are being mislead and are losing what they call depth perception of an image produced by a low element count lens. They say the new high element lenses create a "flat" image. This may apply to a comparison between the old low element count 105 f2 DC and the new high element count 105 f1.4. Is something in the image lost with the new and sharper (pixel peeped 100%) lenses? Can you see a difference in depth perception in the two Micky Mouse photos in this discussion of the issue? yannickkhong.com/blog/2015/10/4/the-flattening-of-modern-lenses-or-the-death-of-3d-pop I am wondering if we should include "depth" reproduction in our evaluation of lenses. For example, if someone has the old 35mm f2 and the Sigma Art 35mm f1.4 and shoots the same scene with both do you see more depth rendered by the old 35mm f2 low element count lens?