Re: [APML] Supra vs. Provia 400

[Roland Roberts <roland@astrofoto.org>]

>>>>> "Hap" == Hap Griffin <lgriffin@sc.rr.com> writes:

    Hap> I don't do any hypering, but have been a long time user of
    Hap> Elite Chrome 200.  I've been trying Provia 400F lately and
    Hap> can say that the blue sensitivity is much better than Elite
    Hap> Chrome.  It seems to give me a better color balance with
    Hap> which to start Photoshop processing.

I'll be shooting Supra 400 and LE 400 next new moon, so perhaps I will
be able to comment then.  I like Provia 400F for some targets, but its
red sensistivity is definitely inferior to E200/Elite Chrome.  My
shots of Orion from last new moon barely show Barnard's loop or the
Rosette nebula in Monoceros; that was 40 min @ f/3.5.  Both could be
seen on the film, but by the time I removed sky glow, I also lost all
hints of the nebulosity.  That wouldn't have happened with E200.

roland
-- 
		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlenter.com                            6818 Madeline Court
roland@astrofoto.org                           Brooklyn, NY 11220

--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>