21mm Avenon super wide

[@dwaynepiper3261]

I was researching alternative Lecia mount rangefinder lenses when I came across this unknown brand and I am very intrigued. Viewing some sample images it does seem to be a hidden gem. Seems very hard to find good vintage wide angles. Curious how it compares to my Minolta 20mm f2.8. Apparently, it is a retro focus design like the Minolta and should have fewer problems on digital bodies than regular wide-angle rangefinder lenses.

[@andrewsmithphoto]

Avenon/Kobulux is a very interesting company I have wanted to discuss more. They seem to be linked to Komura, and some have even suggested the modern leica 21mm lens is based off their design.

[@名字-d7y]

The edge softness is a result of your combination, the thickness of sensor cover glass exceeds some maximum tolerable threshold(for lack of a better term…) for lenses with extremely short back-focal-length, shooting these lenses on digital without edge degradation typically requires BSI CMOS and/or thinner cover glass.

[@andrewsmithphoto]

That sounds plausible, It worked better on the Canon 7. The issue only seems to pop up when shooting wide open.