Top critical review
Get the L if you can stand the weight. If you can't you're stuck with this mediocre lens.
on July 5, 2017
Autofocus is quick and reliable (on a 5d mark III at least)...better than the old version, better than the 40mm pancake, and as almost as fast as the L. IS gives me about two stops which I think is very helpful. It's very big for a 35mm f/2 and draws a lot more attention than the old version. This isn't a fun sized lens like the older version or the Nikon f/2 35.
As for image quality, this lens produces slightly washed out images and there is a lot of darkening in the corners. Skin looks plasticy (If that is a word) and waxy, wrinkles look like cracks because there is almost no contrast in this very mediocre lens which is basically a 200 product with 300 dollar IS.
I don't really know what to advise anyone who loves 35mm and doesn't want a big heavy lens. Every time I compare this to the L 24 70 f/2.8 or the older f/1.4 L, there is something very lifeless about the images taken with the IS lens. i really don't know what it is I don't like about these images, but Canon cut corners with this product...I'm sure a lens engineer of pro could tell you what corners those are.