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New Contributor
Posts: 1
Registered: ‎01-16-2013

Short focus

My 100-400 IS seems to be focusing about 6 inches short of the intended subject.  Is there adjustments in the 7D that can help with that?

Super Contributor
Posts: 222
Registered: ‎12-29-2012

Re: Short focus

[ Edited ]

Yes.  The 7D allows AFMA (AF Micro Adjusting).  C.Fn. III - 5. 


For proper results you will need a tool to properly test your lens:


I prefer and use FoCal.  Other measuring tools are LensAlign (which I do not recommend) and Spyder LensCal.



Some  useful links:



If you want to adjust your lens without any tool you can try this:



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