ISO 200 1/800s f 1.8 versus
ISO 800 1/500s f 5.0 is actually the same exposure (more or less)
Something else is at play here ?
The point I am making here is that the first image according to the exif was exposed to a third of a stop
more light than the second one.
The two images were taken within two minutes of each other in the same location. I doubt the light actually changed at all in that time, which is why the exposures according to the exif are so similar.
I would do some testing of the camera and the lens......my suspicion is that the lens did not in fact mechanically capture the picture at f1.8
Last edited by pschlute; 06-02-2022 at 02:23 AM.