Larry H-L
Well-known
It looks like you are having fun with the 10-20mm, it certainly is w-i-d-e.
Some new firmware became available for the SD Quattros in the past few days, 1.0.8 for the APS-c and 1.0.4 for the "H" cameras.
https://www.sigma-global.com/en/download/cameras/firmware/
Select your camera model, it defaults to the regular APS-c SD Quattro.
Supposedly improves the viewfinder and LCD images.
There is also an option to improve the resolution of the jpegs, however, you MUST go into the linked PDF instruction sheet to get to that download, it is buried and separate. You want the "A" version for the higher rez jpegs.
I put both the jpeg improvement "A" download and 1.0.8 upgrade download on the SD card at the same time and all seemed to go smoothly. It did take longer to update than the last firmware update for me.
Shawn, your focus stacking looks good. I'm a Contax IIa fan too.
I found a really nice used 17-50mm and it arrived today. I hope to try it out in the morning before rain moves in, finally above freezing for a couple of days.
The vignette looks very slight, were these shot at f1.8? I've heard that lens is extremely sharp, can you see any difference?