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That stuff on your lens, is it dust or mud?

Started by Doug Peterson, 07/02/2007 09:08PM
Posted 07/02/2007 09:08PM Opening Post
I see a lot of scopes for sale described as new, except for a little "dust". If it was dust, I would blow it off, so it must be mud--you know, dust + dewing = muddy concoction that must be carefully cleaned.

"--Granted, that's a worse case scenario. The destruction might in fact be ... limited to our own galaxy."
Posted 07/03/2007 12:08PM #1
No matter how well you clean there will ALWAYS be stuff on a lens. That is what Dark/Light Subtraction is for smile