cvctiger
From: San Francisco,Ca

Great telephoto but a little husky!

August 10, 2018
I bought this lens because I needed the focal range for my action photography. Nice sharp photos through out its focal range. Only thing I probably have to get used to is its heftiness at just over 3lbs.....that's me coming off an APS-C format camera setup with kit lenses that weigh much lighter. I guess this is where monopods and tripods will help. Lastly I think the price is a little on the high side when comparing it to other mfgs that have similar focal lengths and specs.... Read More  Hide
Datboi34

Great lens

June 13, 2017
This review is not complaining about the lens itself, it is a very good lens, I am just saying that you can get just as good lens quality and more focal length With the sigma 150-600 and it costs less than half. The reason you would buy this lens is because the sigma Mc 11 adapter is very bad with af.... Read More  Hide
Fitz Michael
From: Florida

R3_100-400GM

August 03, 2018
I had this lens for couple months now and I've noticed the lens sometimes it won't focus. I have to turn off the camera and it the lens works again. I updated the software to the latest one available to download and that did not fix the problem. also, the manual focus to infinity is not calibrated correctly.... Read More  Hide
Mirek S
From: Prague

Not for video, otherwise great lens

December 30, 2019
This is fantastic lens for photography with practically no compromises but if you look for wild life video lens, this one is not for you. image stabilizer is not optimized for video and achieving smooth footage even from tripod is impossible.
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