The wide-open resolution's stunning on the 90 from what I've seen here and on test sites, but I'd like to see it head-to-head with an Elmarit-M 90. I've no doubt absolute resolution would go to the Sigma, but I think the four-element wonder might put up a decent fight otherwise. Its less than 1% barrel would certainly dominate, and I think it might be a little bit better backlit. Vignetting and CA look like a wash. Coma is probably better corrected wide open on the Sigma, but the Elmarit gets good stopped down a bit. I think the Elmarit will win on bokeh. The Elmarit doesn't focus as close, but a helicoid adapter will almost catch it up.
Oct 04, 2021 at 10:58 PM
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