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Old 08-10-2018   #3
Larry H-L
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Larry H-L is offline
Join Date: May 2005
Posts: 632
I think the Sigma crop sensor lenses, such as the 17-70mm, will cause the H body to revert to 1.5x crop size, unless you manually turn that feature off. That might be why you are not seeing vignetting, when others are getting it.

I think Mike in Japan uses the 17-70mm, perhaps he can chime in.
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