I had a thought, what is the maximum magnification of those lenses? A f/2.8 macro lens is effectively f/5.6 at 1:1. So as you get closer to maximum magnification, the more you lose.
Am I bored enough to work out this table?... maybe after a quick drink of tea!
Edit: just did it, didn't give anything either. Excluding the macro lenses, the others were all 0.12x-0.14x for effective max apertures at close focus of near enough f/3.2.
Am I bored enough to work out this table?... maybe after a quick drink of tea!
Edit: just did it, didn't give anything either. Excluding the macro lenses, the others were all 0.12x-0.14x for effective max apertures at close focus of near enough f/3.2.
<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.