SecureGSM said:
PBD,
So that you are aware. Sigma Cine 85 T1.5 is Sigma 85 Art : A$1,100 street price vs Canon 85 1.4 IS : A$2,300
I mentioned that. Get it now?
Roger clearly stated this: same optics.
Here:
“... Today, I’m going to present data from Canon, Sigma, Rokinon, and Zeiss Cinema primes. Why? Because those are the same as the photo primes optically, so what happens with the Cine lenses is representative of what will happen with photo lenses. ..”
(C) Roger Cicala
Roger gets it.
No the Sigma Art is not the Sigma Cine Prime, they have the same optical formula. They are not built to the same optical or mechanical standards.
The two lenses you compared are priced at $3,499 https://www.bhphotovideo.com/c/search?Ntt=sigma%20cine%2085&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search= and $1,599 https://www.bhphotovideo.com/c/product/1354803-REG/canon_ef_85mm_f_1_4l_is.html
Those are facts.
I get it.
"is representative of what will happen with photo lenses" NOT, the same as what will happen with photo lenses. He is saying these are not the results you will get with the same optical formula from a photo lens, but the general differences should translate. Yet you insist on comparing a Cine lens to the possible results from a photo lens, Roger doesn't.
Roger gets it.
Now to the the actual question you are burning up inside trying to hit everybody over the head with, is the new Canon 85 f1.4 L IS as sharp as the Sigma 85 Art? My answer is, who cares other than measurebators? The question anybody interested in taking pictures with any lens should be, is it sharp enough for my intended use and output? To which the obvious answer is yes, the Canon is plenty sharp enough for all but the most foolish of pixel peeping measurebators. Then the question becomes, how much do I value first party engineering over third party, how reliable is the AF, how much do I value IS, is weight a factor, etc etc.
Anybody that gives sharpness a second thought in any modern lens is missing so much, sharpness is so overrated and is just a given for these things nowadays. As a photographer go look at other photographers work, in print, up close, you will see bad processing, distortion, aberrations, clumsy cloning etc way before you think, 'it's not sharp'.