Objective testing oftentimes reveals that a fancy brand name and high price is no guarantee of performance superior to work-a-day Canon and Nikon optics. the Zeiss 55/1.4 Otus, however, seems to be an exception. It is 10 times the price and 4 times the weight of a standard 50/1.4, but the test results for this $4000 2 lb. lens are impressive. See lensrentals.com and dxomark.com.
It should be a great lens for documenting Thanksgiving turkey carving, so head over to Adorama.com now!
[Separately, on the other end of the optical quality spectrum, here’s a recent photo taken with my phone…
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Conversely the Canon and Nikon brands are no guarantee of superior performance either. The best 35mm and 50mm f/1.4 primes for both Canon and Nikon mounts (apart from the Otus) are the Sigma ones.
Could you please show a link to a test showing, that the f:1.4 Sigmas of 35mm and 50mm are superior to the f:1.4 Zeiss ZF.2 and ZE of 35mm and 50mm?