[LargeFormat] 8x10 Darkslides

[Richard Knoppow]

----- Original Message ----- 
From: "LNPhoto" <LNPhoto at twmi.rr.com>
To: "f32 Large Format Photography Mail List" 
<largeformat at f32.net>
Sent: Monday, June 06, 2005 7:17 PM
Subject: Re: [LargeFormat] 8x10 Darkslides


> Well the post WWII slides are IR proof. I'm not sure if 
> the metal ones are.  I remember an old article stating 
> that if the darkslide had 5 bumps or ridges on the white 
> side it was IR proof, If it had only three, it wasn't
>
> Les

   Riteway and Kodak holders (both built by Graflex or 
Folmer & Schwing in the old days) are coded. Three bumps for 
standard dark slides, five bumps for IR opaque slides. Metal 
slides are IR opaque. The difference is the darkslide not 
the holder itself.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk at ix.netcom.com