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Old 07-03-2012, 07:51 PM
Martin Pugh
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Martin Pugh is offline
Join Date: Nov 2006
Location: Canberra, Australia
Posts: 1,312
Thanks again for the info, all v.useful. I will be testing at f2 and up this weekend.

I will have to research the designed backfocus distance between a Canon L lens and the EFS cameras (I have the 550D) and see how that differs.

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