Used purchased, a few days ago

The lens is in perfect condition when it comes to the exterior and the interior. There is no dust between the lenses. I got it gratifying favorable. I want to use the lens on the D7100. This is of course the one hand very well because any outermost occurring blurring, of which I have read in tests are irrelevant when DX Fomat course. On the other hand, it is also critical, because the lens is at 400 mm now has quasi 600 mm. That is, one would again inflating at an FX camera with 24 MP earnings by 50% and only then assess the sharpness.

I shoot with 400mm focal length in RAW, convert to DNG Lightroom on and look at the result there at zoom level 1: 1.
Here I come to the following conclusions: shots from the hand are not possible. Whether with or without stabilizer. Since some comes together to blur. The stabilizer has sometimes funny episodes: Straight vertical lines (only with 1: 1 visible) partly serpentine. Shots from the tripod without stability are much better. Combining tripod, mirror lockup and VR off then brings a notch sharp result.

These restrictions are, of course only for viewing at 1: 1. Even at 1: 2 go through all the images, the shot out of hand.

Otherwise I like the design and feel of the look very. The lens hood deserves greatest praise. Autofocus I find no way to be particularly slow. And that he makes noises that I noticed when handling not large. The images are sharp right into the corners.

Addendum 22:03:15: At first, I did not have the tripod collar. Now I have it and have tried them equal. I can not understand why these original tripod collar is denigrated by some people as insufficiently absolutely. I think they are excellent and fully usable. These should be noted that I have many years of experience in dealing with telephoto lenses, will therefore not be confronted for the first time with a tripod collar.