| Author |
Message |
    
Richard Clarke
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 18, 2005 - 08:38 am: | 
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Does anyone have any ideas for restoring a scratched focus screen? Anyone try to use a product that is supposed to correct scratches in eyeglasses?
thanks |
rick oleson
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 18, 2005 - 08:50 am: |
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I wouldn't do it unless I had a spare screen to replace it with after I had finished. |
Glenn Middleton
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 18, 2005 - 01:25 pm: |
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A word of warning;the eyeglass product is for use on clear,polished lenses only.Use it on a focus screen and you will get a result that is even more annoying than the original scratch.It is also rather difficult to remove if you do not like the results - well the product I have seen certainly was.
My philosophy is put up with and use,replace when a major refurb becomes necessary. |
Winfried
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, October 18, 2005 - 02:22 pm: |
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Most focussing screens are made from plastic, cast into a die with a matte surface structure, and also the fresnel lens rings are cast. It is impossible to restore the structure of the surface once it is damaged. Only cure is to replace the screen.
On most cameras with not-interchangeable screens the screen frame is accessible from the top. I.e., you will have to remove the top cover and the prism, and get to the correct screws in order not to disturb adjustment of the screen. |
Stuart Willis
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 22, 2005 - 01:27 am: |
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If the scratches are on the plain polished side of the acrylic focusing screen you can polish them out with metal polish such as Silvo or Brasso. Better still - use Goddards perspex cleaner (as used for light-aircraft perspex canopies).
If the scratches are on the fresnel side there is no restoration procedure - in which case you must either accommodate those scratches or replace the screen. |
