I have one vivitar lens which is in bad condition, I mean it has
mold and dust at the lens. So I ask this.
These kind of things make big influence to astrophotos? Are
there anybody to explain this? Or share your experience about
this kind of lens?
Thank you in advance.
Regards,
Jerry
ps. Which lens do you recommend between following two lens?
Olympus 185mm f2.8 for OM-1 body
Canon FD 200mm f2.8 for FTQL body