I picked one of these up yesterday for use on a D7100 and noticed two issues. It appears to force the image review timer to be 1 minute. It also changes the image review to function differently. If you have it set to press the OK key to zoom in, it no longer scrolls around by holding the rocker down. You now need to keep pressing it multiple times to move around the screen. Having researched it, it appears that it's a known problem and due to Nikon change the interface on the mount. As it's a physical thing it is unlikely to be resolved. This isn't a show stopper but worth knowing before you buy.
On the plus side, from the limited pictures I've taken it looks to be very sharp and the AF seem pretty accurate without any adjustment. I will test the latter point properly when I get time, but so far I like the way it looks even at F2.8.
On the plus side, from the limited pictures I've taken it looks to be very sharp and the AF seem pretty accurate without any adjustment. I will test the latter point properly when I get time, but so far I like the way it looks even at F2.8.