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19-09-12, 08:11 PM
Join Date: May 2011
Cheers Ian , I know you said it's just a rule of thumb but the sigma has a min focus distance of 122mm to get the 1:1 ratio and at that distance the DOF is half your stated lengths ( according to my DOF calculator ) but using a higher ISO with smaller apertures to keep up the shutter speed is something I'm going to have to look into thanks .
Thanks a lot Harry you've just added a macro ring flash to my wish list , I know what you mean about the image quality on the site but with a max 900 pixel top edge we'll never see the real quality .
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