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Cleaning Scratches on Lenses

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/26/2005 at 08:41
Stud Duck View Drop Down
Optics Journeyman
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Do light to extremely light cleaning scratches affect a binoculars performance in any way?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/26/2005 at 09:04
SteveSF View Drop Down
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Just my humble opinion:

 

I don't think so.  I guess that the theory is that scratches cause diffraction from the glass surface.  In practicality, I don't think that the effect is noticeable.  In a related example, I recently bought an older 7x50 binocular and then found that there was a very noticeable amount of fungus growing inside, on the lenses and prisms.  The image quality, however, was the best that I had ever seen in this size binocular, or any binocular.  Sharpness and contrast was great.  I am debating whether I should send it to a repair shop for internal cleaning.  I got at a good price, and the cleaning would probably cost more than what I paid.  I would suggest that you don't worry about any existing scratches, but take care to not add any more scratches.

 

 

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/26/2005 at 09:15
David View Drop Down
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I've looked through many with light cleaning scratches.  Nine out of ten times they are in the coatings, and they are not visible at all when looking through the binos.

 

If they are in the glass?  It will be apparent.  Which is easy to tell, because you can run your finger nail across it, and it will be obvious.

 

We will be glad to hand inspect any pair on the Sample List you are interested in.

 

Dave



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