Re: Maco IR films

["Gary Hall" <Robert@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Although I haven't used the 4x5 yet, I wouldn't recommend rodinal, unless
you want fairly large grain. I doubt that it would be as large as HSI. X-tol
is my favorite and I develop my 35mm the same time for both Maco and HIE, it
may be the same for 4x5 (YMMV).

But I'm afraid you will be disappointed at using a red 25. Using a red 25
seems to me like a normal black and white with a red filter. No real IR
effect. I got a filter from Clive at CoCam that's about a 89b and that
worked fairly well, but I had to expose it much longer (it's a much darker
red). This may make it difficult for portraits.  Maco asserts that their 820
film is compatible with Kodak, but I believe that is a little misleading. At
least it's apparent that their film sensitivity curves don't match. Kodak is
much more responsive with a red 25 than Maco.

Check out Marco's site that he just posted and compare for yourself:
http://www.pauck.de/marco/photo/infrared/comparison_of_films/comparison_of_f
ilms.html

Good luck,

R. Gary Hall
Infrared and lith Prints...
www.RobertHallPhotography.com



----- Original Message -----
From: Joseph O'Neil <joneil@xxxxxxxxxxxxxx>
To: <infrared@xxxxx>
Sent: Monday, May 15, 2000 4:20 PM
Subject: Maco IR films


> Now that my one box of HSI is almost used up, I have ordered 3 boxes of
> the MACO 820 form Cachet.  A couple of questions for anyone who has used
> this film in 4x5.
>
> 1) I use Rodinal most of the time for developing film, sometimes
> Xtol.  Anyone have suggested developign times for Rodinal, or is this not
a
> good developer?
> 2) Using a standard 25 red filter, what woudl you rate the ISO at?  200?
>
> Thanks much, looking forward to my film.
> joe
>


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