Most of the listings seem to say 'there is prism corrosion', at least with the one Japanese seller I've seen with lots of stock. It ranges from minor specks to dark swabs and one I saw the other day had a gnarly black strip visible across the bottom third of their shot. I had a quick Google and some owners were of the 'meh, no big deal for now' mindset while others were buying up OM10s to harvest their prism because they could see it getting worse.
Most of the listings seem to say 'there is prism corrosion', at least with the one Japanese seller I've seen with lots of stock. It ranges from minor specks to dark swabs and one I saw the other day had a gnarly black strip visible across the bottom third of their shot. I had a quick Google and some owners were of the 'meh, no big deal for now' mindset while others were buying up OM10s to harvest their prism because they could see it getting worse.