e6filmuser Offline Upload & Sell: Off
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e6filmuser wrote:
I've done some static, bench tests on inanimate objects. My conclusions are that, at this magnification, f11 may just be the optimum aperture although I cannot really see any clear difference at f16. There is some deterioration at f22 and f32 is dreadful. Also, the tiny DOF at f8 makes this aperture useless other than for copying and suchlike, and, presumably, for stacking.
Harold
I took some further (flash) shots today, this time of the fine petal details of an orchid. As the subject was rather three-dimensional and focus planes difficult to replicate, I took three shots of the same area at each of the apertures f11, f16 and f22. I chose the best image of each for comparison.
The results were similar to the previous ones but with, perhaps, a tiny bit more resolution at f11 than at f16. Although, at this magnification, I would chose f11 as default, I would be happy to go half a stop smaller, a full stop if DOF was a priority.
Harold
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