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Posted 12 December 2014 - 05:29 PM
Posted 13 December 2014 - 09:56 AM
I don't know about the clanking, but I have some Sigma lenses (for Canon DSLRs) that have IS that do the same thing, even in an optical DSLR viewfinder - the image sometimes jumps vertically when the IS is on. It can be really surprising when it does it, but I do think it is normal for this technology to do this, and probably does not affect anything.
Posted 22 December 2014 - 06:20 PM
I would be suspect. The OIS has been touted to help on video. So I assume it works well. I have that lens and several others and have not seen a jump as you describe. Perhaps I am lucky? If it does not do it with the kit lens, but does with your new one, then I think the problem is with the lens. Find another body you can put it on to see if it still does it. That would narrow the problem down some. If you are using a tripod for the video, then that might be the problem. They say to turn the OIS off if mounted on a tripod. I do not know if the result you are seeing is a norm in this case or not.
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