Some time ago, like maybe a decade, I actively collect lenses for the Konica AR mount. They were mostly Hexanon (Konica) lenses, but a few third-party lenses made it into the mix.
I carried an old Soligor 35mm f/2.8 adapted to my Sony A7Sii a couple of times this week on walkies. Then I made a few captures with it at my worktable.
Aside: I also carried a Vivitar 35mm f/1.9 for a day or two. I have more thoughts on the latter for later publication. In fact, I will write a 35mm shoot-out for those 35mm lenses in my inventory. I learned a few things by shooting some test shots with them. This entry is a mini-review of the Soligor.
My impression of the Soligor is not particularly favorable. It is reasonably sharp, but nothing outstanding. However, it has poor flare resistance. This is evident in the image above even though the lens is stopped down to f/8 for that capture. It is bad. It is worse wide open at f/2.8.
So, although the lens was probably an alternative to the much more expensive Hexanon issue (at the time), I think it is not a good alternative.
The capture at the bottom of this entry is from the Vivitar 35mm f/1.9 at f/8 with the same camera and same post processing. The difference between the two images is striking.
This was fun. I remain grateful and life is good.