I find that not only is the speed of the lens important,
But the quality of the lens wide open is Important when
Using split image rangefinder screens. I can tell right
Away with how good a lens I am dealing with by the split
Image behaviour. With the best optics, the split image is
Knife edge, with less than stellar lenses, it's kinda wishy-washy.
jco

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Cory Papenfuss
Sent: Thursday, October 19, 2006 8:22 AM
To: Pentax-Discuss Mail List
Subject: Re: K1D aperture simulator, part Three (III)- NOT

        You guys must be better than I at using plain matte screens.
The 
best thing I've ever done with my -DS was *add* a split-prism focus 
screen.  Probably about 1/10th as many missed focus shots since I've
done 
that.

        I agree that micproprism aids suck with lenses slower than 2.8
or 
so.  With a fast 50 or similar, they're beautiful IMO.  To each their 
own... that's why they're *replaceable*.

-Cory

> I've done this on every SLR camera I've owned since 1969. I hate  
> microprism focus aids particularly, but split image rangefinders are  
> also obnoxious.
> 
> G
> 
> On Oct 18, 2006, at 4:47 PM, Adam Maas wrote:
> 
> > I'm actually in the process of replacing all my split-prism screens

> > with
> > plain screens, where possible. I find split-prisms annoying as
they're
> > never where you need them ...
> 
> 
> 

-- 

************************************************************************
*
* Cory Papenfuss, Ph.D., PPSEL-IA
*
* Electrical Engineering
*
* Virginia Polytechnic Institute and State University
*
************************************************************************
*


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