Summicron DR fungus
I am not sure exactly how to recognise a fungus problem, but my summicron dr has started to produce some very soft pics, and there seem to be several circular / annular abnomalities on one of the inside surfaces. Could this be fungus, or would fungus show a more random pattern? I haven't previously used it for at least 12 months.
The lens has many scratches on the glass, so I wonder if it is worth cleaning.
Ideas much apprec iated.