[OM] Re: Grand Junction

[Chuck Norcutt]

Ouch!!  I mean the expense, not the scratch.  All a scratch does is 
scatter a tiny bit of light in direct proportion to its area vs the area 
of the front element.  Major scratches are fixed by painting them over 
with India ink.  Consider that it's an obstruction.  So is the typically 
30% obstruction created by the secondary mirror of a catadioptric system 
(mirror lens).  Aethestically you may feel better but no one would have 
ever noticed optically.

Chuck Norcutt

Ali Shah wrote:


> I tried going without a UV on the ZD 50-200. However,
> I noticed a very tiny little scratch on the front
> element. I had the lens replaced and didnt want to
> chance it again. 



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