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sigma 85 art vs samyang/rokinon 135 f2 comparative sharpness & image quality

Started 10 months ago | Discussions thread
OP Albert Einstein New Member • Posts: 4
Re: sigma 85 art vs samyang/rokinon 135 f2 comparative sharpness & image quality
1

I answer to myself. I had done some tests with natural light, mixing natural light and flash, but I had not done any tests with artificial light alone. When testing only with artificial light (flash) the results are correct (or let's say expected), both lenses at f2 and with flash light seem to win (by a small margin) the sigma. I had done the tests with natural light on a tripod and at speeds from 1/160 to 250 (more or less), with the mirror raised or in live view mode (which already raises the mirror by default), it still gives the feeling that the shutter curtain which even after shooting transmits a minimal vibration, affects the sigma more than the samyang and I think that's where the results are a bit misleading, and taking pictures freehand also affects the vibration of shot a lot when sigma is mount, as far as I can tell affects it vibration more than other lenses, including the samyang 135.

In summary, in my experience I would say that the sigma 85 art is a more delicate lens regarding shutter speed than other lenses with a similar focal length, or at least, that is what it has seemed to me, it is greatly affected by the trepidation in shutter speeds not too high..

Anyway, I can still wait for opinions or comments about it. Thank you very much!

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