05-31-2013, 11:54 AM
It depends on the specific lens. You need to know the settings that give you most magnification. This means focal length and minimum focus distance at that focal length. For longer focal length lenses I've used, it was on the long end of the zoom. Then you get as close as you need to for the magnification. On compact cameras, it tends to be nearer the wide angle side.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.