I don't know the photographer, but he is Chinese and tests an endless amount of vintage lenses - even oldest and strange ones, adapted on mediumformat cameras (Fujifilm GFX), with many example photos - albeit fewer where you can see the original image file.

The image of the cat is such an example, which still had its EXIF information intact.

Cat Photo at ƒ1.2

THe to me unknown photographer took the photo of the cat with a Fujifilm GFX 50R, and the Samyang XP 85/1.2 lens. Unaltered. Albeit i have made the vignetting a partially even weaker and added a bit more saturation. The original vignetting is mild and soft, easily corrected in Photoshop.

I added saturation in order better to show, how the lens renders any chromatic aberrations at 100% in the cat's hair and in the background out of focus areas - so you can spot these easier.

Well, there isn't much chromatic aberration. Not really. Or better said, less than the Canon FD 85/1.2L as well Canon EF 85/1.2 L II for sure. Plus that the micro contrast is considerably clearer, sharper and more defined compared to the above mentioned lenses.

Now you see why I find the Samyang XP 85/1.2 so intriguing !

Naturally for all lenses, the LoCA will diminish the more you stop the lens down. But why do we use ultra bight ƒ1.2 lenses ? In order to shoot at aperture ƒ1.2 - so image quality matters at ƒ1.2

If I would have corrected the cat image even further, all LOCA would have disappeared, the noise vanished, and the greenish part as well, plus even more micro sharpness.

(That isn't strictly necessary, given that when you work with 102 MP like in my case, you don't see these things, once you prepare the photo for this XPan.se PhotoDiary down to equivalent 4 MP).

So yes. The performance of the Samyang XP 85/1.2 is intriguing. Given the cost of 504 € and being a candidate for the use on larger sensor cameras - it is even more impressive. Plus I can use it on the Canon EOS R/R6 cameras, as well.