***SPAM*** Re: [APML] Advice, suggestions needed on new images

["Don Westergren" <westergren@netzero.net>]

Hi Alan,

I did my lab film test on the Fuji SHQ200 and have the results on
http://home.nethere.net/mpd/FilmTestData/FujiSHQ200.htm

Based on my tests, I rated this film as "Poor", because of the low red
response and uneven color response. I tested this film twice, with similar
results.  But I have not shot this film with my scope.  Other
astrophotographers have used the film and some have reported good results.

I hope to shoot this film and some Konica Centuria 400 on actual sky
objects, but the weather around here in San Diego probably will prevent that
until March or so (also delayed while I'm building a permanent observatory
so everything's "down for now").

Listen to what Joe Mize has given you.  He has much more experience than I
with the Fuji SHQ200 and with PS processing.  His pictures taken with the
Tokai DS filter are very good.  I haven't seen his Fuji SHQ pictures without
the filter.  However, the DS filters usually cut off the green "light
pollution" while letting the reds and blues come through.  That would make
the Fuji SHQ more even in color response and allow darker sky background and
greater contrast to your pictures.  IDAS, Tokai, and Lumicon all make deep
sky or light pollution filters.

If you don't have any of the good old Supra400 left, you might try the
Konica Centuria400.  It has more red on longer exposures than the Fuji SHQ,
and much more even color response.

Don

----- Original Message -----
From: "Alan Voetsch" <alanv12952@yahoo.com>


> Hey Don,
>
> --- Don Westergren <westergren@netzero.net> wrote:
> > I think you are seeing the results of a film that has uneven color
> > response.
> > My film test of Fuji SHQ200 show low red response compared to green
> > and blue
> > out to 136 minutes, then the green falls off out to 273 minutes.
>
> I believe my 2 hour M33 shot on this film would support your statement.
> In your opinion, is there any exposure range that maximizes this film's
> abilities?
>
> >  Can it be
> > repaired?  Try increasing the red in PhotoShop.
>
> I'll see what happens when I take these into PS.
>
> Thanks,
> Alan



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