Howdy all

I just bought some second-hand binoculars -- cheap, because they're
old-school 10x50s, and weigh about a Kg.

They're great for what I want, but the image seems a little "foggy". I
don't know if this is due to the lens coatings deteriorating, or if dirt
has somehow got into the assembly (unlikely, it seems to me).

Is there any way to clean them up and make the image clearer? Anyone?

Cheers
John