Tijmendal
Young photog
Hi,
The ring on my aperture ring of my 35mm Cron shifted, as can be seen on the picture:
I honestly don't know how it got this way and I was wondering if anyone knows how to get it right again? There's three teeny-tiny screws in the aperture ring, could that have something to do with it?
Thanks
The ring on my aperture ring of my 35mm Cron shifted, as can be seen on the picture:

I honestly don't know how it got this way and I was wondering if anyone knows how to get it right again? There's three teeny-tiny screws in the aperture ring, could that have something to do with it?
Thanks
Chris Bail
Regular Guy
My v3 does this too. Check the rear element retainer ring. It's probably slightly loose. I haven't bothered sending mine in, as I just turn the aperture ring back into place by hand.
Tijmendal
Young photog
My v3 does this too. Check the rear element retainer ring. It's probably slightly loose. I haven't bothered sending mine in, as I just turn the aperture ring back into place by hand.
Thanks for explaining. Which one is the retaining ring?
I just noticed my hood is slanted too (I'm guessing at the same angle as the aperture ring).
Rico
Well-known
Your 'cron is the version 4, which has a build-quality history. The front section is glued, and can separate if sufficient force is applied (like mounting the lens via the hood).
Tijmendal
Young photog
Your 'cron is the version 4, which has a build-quality history. The front section is glued, and can separate if sufficient force is applied (like mounting the lens via the hood).
Wow. I always thought it was a v3, but upon closer inspection it does seem to be a v4 indeed. I didn't know they were also made in Canada. Lucky me I guess.
I read up upon the problem and it looks like the front element is held into place with glue (instead of screws). I guess trying to twist it back is only going to make matters worse.
I mounted it on my M8 and the photos are sharp, though I wouldn't know if they're less sharp.
What would you advise? If I send it it in, would a different/better kind of glue be used so it wouldn't come lose again?
Rico
Well-known
Personally, I would let sleeping dogs lie if the images are sharp across the frame. My version 4 is unsharp on one side, which is a bit annoying. Fortunately, I own a pair of Summicrons version 3 that I prefer. 
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