docsmith said:Rick said:Could you post a link to the lenstip.com comparison where you are getting your information? Sight unseen, I would bet the house the Sigma 35 is nowhere close to the Otus 55 in the corners @ f1.4
The Otus:
http://www.lenstip.com/390.4-Lens_review-Carl_Zeiss_Otus_55_mm_f_1.4_ZE_ZF.2_Image_resolution.html
The Sigma 35 Art:
http://www.lenstip.com/359.4-Lens_review-Sigma_A_35_mm_f_1.4_DG_HSM_Image_resolution.html
I would put the Sigma at ~39 lpmm center, 31 lpmm APS-C edge, and 28.5 lpmm FF edge. The Otus at ~38 lpmm center, 33 lpmm APS-C edge, and ~28 lpmm FF edge.
Both, very remarkable for f/1.4.
The D3x on the Otus actually has the advantage there, but the Sigma 35A still compares favourably at f1.4 and f2.
As we have learned from Lensrentals there can be a ton of variation between tests, so this is definitely not conclusive, but it is very (very) promising.
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