Re: [APML] Porta UC Was: Re: Uniquephoto.com kodak supra !

[Alan Voetsch <critter12952@yahoo.com>]

Hi Dave,

--- Dave-M <dmiller2@neo.rr.com> wrote:
> Thanks for the review on the Portra UC.
> I picked up some of the Kodak Royal Gold Select Series 400 " yeah the
> good  stuff ;-)
> from a local camera shop and check on the Supra 400 but they were all
> out  of it, the guy
> showed me some Kodak 400HD  "high definition", has anyone tested it
> for  astro work.

Never heard of it. Grab a roll and compare it side by side with the
select. Find a couple different DSOs (a galaxy, a cluster, emission and
reflection nebulae) run 2 or 3 different exposures on each (15, 30, 70
minutes). You may need to adjust those times depending on the speed of
your system. Yank the film, put the other roll in and repeat the same
shots. Keep all conditions as close to identical as possible. And then
let us know what you found out.

Keep in mind that using that same technique, Supra looked like crap
until after about 30-40 minutes. It is slow out of the blocks, but will
continue to grab light at a steady rate. That's with my f/10 system.

Alan

=====
Alan Voetsch
critter12952@yahoo.com

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