02-08-2022, 10:45 AM (This post was last modified: 02-08-2022, 10:54 AM by Klaus.)
Yes, it is, of course, the usual highlight test but what about the shape?
* I removed the square-shaped hood -> it's not the hood
* the effect is similar at other smaller apertures but gone from f/2 (but this may just mask the effect) - but a frequency issue with the light seems unlikely.
* I can't spot something "square" in the lens
* the effect is also visible in other, more "normal" images
02-08-2022, 02:56 PM (This post was last modified: 02-08-2022, 03:16 PM by Brightcolours.)
Weirdly enough, the EXIF says SONY ILCE-6300, and Tokina atx-m 56mm f1.4 E.
If you shared which f0.95 lens you are testing, and on which camera, it would be easier to explain what we are seeing.
Somehow, it does look like the rectangular surrounding of the A6300 shades the light, but that means that the light from the lens enters at a rather very extreme angle. 7artisans 25mm f0.95?
Yep. I was right, I think? The 25mm f0.95 has the focal point very close to the sensor due to the short focal length, and a large aperture. The Fuji cameras do not have a similar problematic sensor surround as the Sony cameras do, and as such do not show the rectangular shading with the same lens.
02-08-2022, 10:15 PM (This post was last modified: 02-08-2022, 10:21 PM by Brightcolours.)
Non-focussed light (bokeh balls in the background) hits at a different angle than the focussed light. The same Sony rectangle issue can be observed with the mentioned 25mm f0.95 (https://www.youtube.com/watch?v=xtONaZwA7ug&t=168s). If you test the same lens on a Fuji (with Fuji mount of course) you will not see the shading from the rectangular sensor surround.
Test this: mount the lens on your FF A7 body. The rectangular shading will magically disappear.