Hi,
A few months ago, I was at the photo lab talking to the owner. We were looking for some old lighting equipment and somehow we ended up in a small storage room behind the storage room, behind the studio, behind the store. Something like an attic within the attic. You get the idea. In there, I found a pile of dust that resembled a lens. It was this dented old Vivitar screwmount 135mm f2.8. He said I could take it if I wanted since it was pretty much useless and it may have been there for years.
Back home I dusted it off and noticed some fungus inside. It seems it could still be saved. However, the dent is quite severe. It must have been quite a hit. A modern plastic lens would have not survived that kind of punishment.
The dent prevented proper disassembly to reach the fungus and clean it. So with nothing to loose I grabbed my Dremel tool, a hammer (yes, a HAMMER) and a wodden dowel. A few precision blows got the ring back into rounder shape. Then I grounded the area very carefully. Eventually I was able to disassemble it for service.
Cleaned it and everything went back together. I still need to clean it properly on the outside but I took a few test shots with my K100DS.
These have absolutely no processing.
The lens is quite sharp, but contrast is not that impressive. But it is VERY usable.
I noticed the pics came out a hint dark. I was using AE-L button to take a measure stopped down. Not a big issue since this will most likely be used in full manual mode.
It is hard to focus manually on the K100DS with big apertures. This shot is wide open f2.8 Notice the focus area is a bit behind the ball.
Same shot at f22
The lens says Close focus. How close is Close focus? It goes to 2:1
These were shot at closest focusing distance. No crop nor post-process of any kind.
In conclussion, I think I have a keeper! I can use in all my bodies from the SV and Spotmatic, all the way up to the K20.
Thanks,