Samsung has some excellent primes out there with a reasonable price tag - 30/2, 85/1.4, 16/2.4, etc; many NX system users were missing the "bright" (usually considered /2.8) standard zoom - here we go with not only F/2.8, but /2.0 at the wider end. And the funky viewfinder of NX30 - whoa! Neat stuff! Considering the background of the company (deep pockets + superb electronics), I guess Nikon/Pana/Oly engineers can't have much of rest this year to keep up!
Wow, 100+ comments so far, seems a popular unit. Have been using this for more than five months now (first rented for test,,) For me the main reason is the excellent sharpness at F/2.8 @ 70mm.
Vibration Control works fine with videos, does not work fine with fps shooting (I guess the stabilizer has no time to find a "stable" position between shots). Since the FF body is heavy and stable, as well as my hands, the VC is always turned off (except videos). At a positive size, VC works fine at single shot mode (so no continuous).
CA sometimes a problem at corners with high contrast (direct sunlight), even at F/9. Depends on certain situation (angle, subject) though.
Corners are softer than on Canon 24-70 /2.8.
AF is silent, smooth, fast, accurate - could not dream of better.
Glass is so good that it outperforms 21mpix easily. Would like to hear from Nikon D800 users - has anyone had a chance to test this lens with 38mpix?
Other than that, the lens is a real honey.