This Wumme of lens is now half a year in my possession and have not regretted buying second. First of all, it is of course a lot of money. Compared to other lenses, the, perspective, however, it eventually will cost only a fraction of the lenses that have the professionals in action. I only say L series ...
I bought it to me during a safari in Africa, where it was then alternating with another lens in use. I have several times a day change the lenses in an open carriage, with animal heat, dust and wind. Of course I tried to minimize exposing the lens these powers, but sometimes it just needs to go fast ...
What can I say, the lens has everything put away without complaint, it's been a very loyal companion. It fits comfortably in your hand, the rings are handy and can be operated super. For small items, the autofocus has its problems, but I have at the camera with other lenses, is so I think the camera owed. That's what the manual focus, I often had in use and has absolutely convinced me.
I used a tripod and with up to 1/60 sec photographed out of hand, of course, propped. Works flawlessly. Just as 1/1000 of a moving car. That certain other places no longer look then quite faithfully in the pictures goes without saying.
The photos that I've done with it, are certainly very nice. I can not detect any error. Colorfast and sharp to the edge.
If you think about the purchase just believe me: this thing is way too big and huge for everyday wear, bulky and heavy. Permanent lens change also requires patient companion ... But if you have a reasonable field of application: it wants you not to miss!