09-07-2015, 09:00 AM
Most tests do not include VR / IS / VC /OS effect. As Klaus said, it's difficult to find a fair testing method. The only test I see is getting one and comparing with a well-known lens.
What is easy to test: How well the lens recognize "I'm on tripod now", but I guess, that's close to impossible. The time is just too short to detect, decide and react. VR switched ON always means sort of attempting movement compensation.
What I also observe is a massive side jump of the VR (Nikon) when I release the first shot. I'd need to recheck but I think the difference between finder view before and after shot is less big with Sigma.
What is easy to test: How well the lens recognize "I'm on tripod now", but I guess, that's close to impossible. The time is just too short to detect, decide and react. VR switched ON always means sort of attempting movement compensation.
What I also observe is a massive side jump of the VR (Nikon) when I release the first shot. I'd need to recheck but I think the difference between finder view before and after shot is less big with Sigma.