Re: [APML] Portra 800? was: 4x5 color negative

["Bert Katzung" <katzung1@attbi.com>]

Hi Craig:
Your M42 looks about half-way between mine and Fred's --- less red than
Fred's, more than mine. Exposure about the same as mine, so that's not the
reason. Was this taken with a recent batch of Supra? Not sure when they
stopped manufacturing it....
I look forward to your upcoming results. I gather you are still finding
Supra available.
Bert

Bert Katzung
katzung1@attbi.com
www.astronomy-images.com

----- Original Message -----
From: "Craig Utter" <cmutter@bellatlantic.net>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Thursday, April 24, 2003 7:17 PM
Subject: Re: [APML] Portra 800? was: 4x5 color negative


Hello Bert:

I've put my old site backup:
http://mysite.verizon.net/cmutter/index.html

Follow the link to film comparisons and you'll see my shot of M42. I've
gone back and started trying some of the latest supra films and I'll
post images from them soon.

Craig Michael Utter


Bert Katzung wrote:

>Hi Fred (and Craig):
>That's a wonderful image, with no sign of the cyan cast that I got with my
>M42 shot. When was it taken? Could it be that your film had a different
date
>of manufacture? Unfortunately (?), I don't have any more of the 800 film
>that I used, so I don't know the date on mine, but Kodak is famous for
>"improving" their emulsions and it may be that yours was manufactured
before
>the "improvement." Have you taken any more shots with Supra 800 using
>recently purchased film?
>Alternatively, you may have processed your shot very differently. My test
>shot was essentially a raw scan with just some stretching and no color
>adjustment.
>Thanks for any additional information.....
>Bert
>
>Bert Katzung
>katzung1@attbi.com
>www.astronomy-images.com
>
>
>----- Original Message -----
>From: "frédéric caron" <astronome@videotron.ca>
>To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
>Sent: Wednesday, April 23, 2003 2:27 PM
>Subject: Re: [APML] Portra 800? was: 4x5 color negative
>
>
>
>>Hi all,
>>to see my Orion nebula taken with Supra 800, go there :
>>http://www.quebec-astro.com/La_Nebuleuse_dOrion.htm
>>
>>Fred
>>
>>
>>




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