Split images are less accurate with wider lenses, the shift is smaller and 
aligning less precise. No split image is dead-on accurate and if that's a 
requirement, a matte screen and a magnifier are the way to go. 

-Adam


Bob Blakely wrote:
> If you have a split image scree that is not dead on accurate, you have an 
> improperly designed and/or manufactured screen. It would mean that the 
> center line where the prisms cross is not in the same plane as the ground 
> glass's frost. FYI, I believe they are "optical" plastic now.
> 
> Regards,
> Bob...
> --------------------------------------------------------
> "Art is not a reflection of reality. it is the reality of a reflection."
>       -Jean Luc Godard
> 
> ----- Original Message ----- 
> From: "graywolf" <[EMAIL PROTECTED]>
> 
> 
>> Just to give the other point of view, I hate split image focusing devices. 
>> To me
>> they are annoying, right in the middle of the picture where I want to see 
>> what I
>> am looking at, and they are not as accurate as you guys seem to think they 
>> are.
>> Plain ground glass with grid is my choice. It is interesting how many 
>> folks do
>> not trust their eye.
> 
> 



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