EXCERPT page containing first few paragraphs. 2019-04-19 14:16:34
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For handheld shooting, image stabilization is a godsend.
John H writes:
It is perhaps a good idea to advise your readers to turn off optical stabilization on the Sigma 180/2.8 when using it on a tripod. I found that when mounted, OS seriously degrades image quality. Easily forgotten.
My experience with Canon and Nikon and Sigma lenses is all the same: Nikon’s vibration reduction (VR), Canon’s Image Stabilization (IS) both can blur images if enabled on a tripod.
The foregoing is not a strict rule; certain unstable tripod setups (spongy ground) might benefit if/when pressing the shutter release manually (without a delay or release).
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