Thinking of buying a friend's Bausch & Lomb 500mm f/5.6 telephoto lens. Can't find anything about it.
It's old and dusty, but soild. Maybe 30 years old?
Could I convert it to decent telescope?
How much do you think it's worth?
S. Gaber
It's old and dusty, but soild. Maybe 30 years old?
Could I convert it to decent telescope?
How much do you think it's worth?
S. Gaber
