Hi everyone,
I posted a while back asking for a rangefinder recommendation and landed on the FED-2. I just picked up a Jupiter-12 from an ebay seller for not too much, and it looks to be in fine shape, save for a few things: there seems to be some smudges/fingerprints on the rear element and a few tiny scratches. How should one go about cleaning this protruding rear element? Is using a blower + wiping with lens tissues okay? Also, how worried should I be about these scratches? They're hard to see, unless in bright light. I've heard that the protruding element is closer to the focal plane, so scratches there could really impact photos (unlike ones on the front element).
Thanks in advance!