Kodalith Ortho film question

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henryyjjames

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Hello,

So I found a bulk loader in my college darkroom with the label "Kodalith Ortho loaded 18/3/2015". Obviously, I want to shoot a roll and develop it, but since it's an old film, I am wondering what ISO I should shoot it at. I actually don't even know what the original ISO rating was. Is there a specific developer that is better for this film?
If anyone has any knowledge about this particular film and its development.


Thanks,
Henry
 

xkaes

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I'm sure it's fine, but that probably doesn't matter. Unless you do hi-contrast stuff, you are better off selling it on EBAY and using the profit to buy some film you can use.

kodalith.jpg
 

Donald Qualls

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When new, Kodalith had an equivalent ISO of about 2 to 3, similar to the enlarging papers of the 1970s-1980s. The good news is, the slower the film, the less speed it loses over time.

When I was in high school (mid-1970s) we developed Kodalith in diluted Dektol to get results with some gray scale. The original use of this film, with the A-B litho developer (mixed before developing) was for very high contrast, and processed that way it's a stop or more faster, but even Dektol gave a pretty limited scale. If you want real gray tones, you'd probably be ahead to develop with a developer intended for document films, like H&W Control, POTA, or similar -- but then you 'll give up even more speed (might wind up at EI 1 or even lower). Testing would be advisable.
 

AnselMortensen

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I used some of that back in my community college days in the early '80's...
IIRC, we used Dektol 1:3, rated film around 100 ASA (yes, it was ASA then) and bracketed...very high contrast, but with some gradation...not pure black/ pure clear.
My notebook from that class is somewhere in storage, and I can't remember development time/temp.
On the plus side, it is orthochromatic, so you can develop by inspection under a RED safelight.
If you want to pursue using it, I'd recommend finding some darkroom books & magazines from the '70's, it was a popular 'creative technique ' back in the day.
Did I mention 'bracket' ? :smile:
 

MattKing

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Thread moved to the B&W: film sub-forum.
And on the thread's subject - the film is great for making title slides!
 

Don Heisz

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You can expose Kodalith Ortho 3 at iso25 and get decent results - but high contrast. You can try iso12. At any rate, you can pick a developer and develop under a safelight.
 

Paul Howell

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Kodalith was used in the printing trade to make half tone plates. I know that some experimented very low contrast developers such as Kodatech (?) use with Tech Pan. Very fine grain, white skies, the tones always looked strange to me.
 

AnselMortensen

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Hmmmm... I like that idea, I have some Kodalith in 4x5, and some Technidol.
Thanks for the inspiration!
 
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