light_pilgrim wrote in post #17030711
1. Anybody compared to 17 TSE or Zeiss 21 in terms of corner to corner sharpness?
2. This lens is plastic....what do you think about durability and build quality? Will it survive arctic weather?
1. Yes, I've done some detailed comparisons (16-35 f/4 IS vs TS-E 17, TS-E 24, 24-70 f/2.8 II, and 24 f/1.4 II), and it's just as sharp as my TS-E 17 at all apertures, and it actually has better contrast. It also has less CA than the 17, but the distortion and vignetting are much higher, for obvious reasons. This is with the 17 in a neutral position.
The only lens I have that beats it for sharpness is the TS-E 24 at 24mm and the 24-70 f/2.8 II at 35mm. The IQ is a very close match to the 24-70 f/2.8 II in terms of color, contrast, and sharpness (at 24mm, at least).
2. The build quality is extremely similar to the 24-70 f/2.8 II which has (so far) proven to be plenty tough in my and many other's hands.