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For those people worried about small scratches on front elements


andybarton

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If a front element cracked to pieces has no noticeable effect on image quality, then what exactly is the basis for the assertion that a protective filter causes image degradation? ;)

 

What is incontrovertible, is that even small coating scratches degrade the resale value, and given the current cost of Leica lenses, that could amount to quite a sum. While I say I'll never sell any of mine, the truth is, never say never.

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http://www.digoliardi.net/P6010603.jpg

 

That's an economical, early central density filter made for the pictured 8x10" sky or research camera: a semi-silvered star laminated onto the filter. It works very well. (The rectangular artifact is light coming in from the open ground-glass back in the rear.)

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