1. Processing / Weight
For processing we can only say: Nikon-like! Since nothing wobbles and everything feels great. Even if it's like that is not 24-70 2.8 made of metal, so it feels dibasic. Accordingly, the low weight is considered positive. On a D600 / D610 has a good balance. Especially my wife welcomes the lower weight very.
2. Image Stabilizer Gen. III
I must confess that we often take pictures above 1/125 and rather turn up the ISO bit because so a stabilizer with moving subjects (and the supposed occur at weddings :-) nothing brings. So I have not really missed him by other lenses. With a focal length of 200 he is, however, always a safety buffer. Whether it better than the gen II is, I can not say because we had or have no lens with such image stabilization.
3. Image Quality
I would not like to refer to any laboratory values or myself as Pixelpeeper. At our D600 / D610 only had the 70-200 f4 a few problems. 10 shots were partly only 1-2 sharp. So, not the lay elsewhere, the focal point, but it was all somehow not focused properly. For 13x18 it does have enough but just not as razor sharp as the 24-70 2.8 from Nikon. Then I sent for the purpose of adjusting the lens. One week later, I had it back in the hands. What can I say, now sits the focus and the images are the 24-70 2.8 definitely equal. Just great! Contrast and colors are also on Nikon Level. Ve Got nothing negative to report.
As written input, now the majority of the photographs are made to the 70-200 f4. The lack of aperture setting against the 2.8 is similar to a full-size easy with ISO ... and by highlighting the subject from the background is there also not sooo big difference to 2.8.
All around a great lens!
