RE: Infrared-Digest

["George L Smyth" <GLSmyth@xxxxxxx>]

> -----Original Message-----
> From: owner-infrared@xxxxx [mailto:owner-infrared@xxxxx]On Behalf Of
> Michael Tkach
> Sent: Thursday, November 04, 1999 12:51 AM
> To: infrared@xxxxx
> Subject: Infrared-Digest
>
>
> I shoot Kodak HIE at 200 ASA and develop in D-76 for 11 min. at
> 68 degrees.
>
> If I use an ASA of 50, 100, or 400, how do I figure out what the
> development
> times are? Is there some mathematical formula to determine this?
>  Kodak was
> of no help.  I hope you can offer some advice.   Thanks.

When I was doing my testing, I developed HIE as exposed at EI 250 when
metered through a #25 filter with D76 1+1 70F 10 min.  When exposed EI 125
my time went to 8 1/3 min, EI 60 7 min, and EI 500 12 min.  As your starting
point for development is different from mine, you may wish to adjust your
starting points accordingly, and always test.

george

---
Handmade Photographic Images
http://www2.ari.net/glsmyth/

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