Re: [APML] Black Negs a new developement

["Jim Janusz" <jjanusz@dc.rr.com>]

Brian,

Are the negatives black out to the sprocket holes?  If they are, you are
likely dealing with a light leak during pre/post handling or exposure.
Particularly if your daytime shots were ok then you must be getting some
type of light leak.  30 to 60 minutes at f4 should not over expose TP to the
point of being totally black.  If you have black on just the camera frame
area, not the sprocket holes, you may have to cover the viewfinder of your
camera during exposure as they have been known to leak.

I would concentrate on finding a source of light during exposure.

Oh, how about your D19 how did you mix it?  Full 1 gal. batch or less?

Jim
----- Original Message -----
From: "Brian Sledz" <brianhome@email.msn.com>
To: <astro-photo@seds.org>
Sent: Monday, December 10, 2001 8:15 AM
Subject: Re: [APML] Black Negs a new developement


> Hello Again,
> I seem to have no luck developing Lumicon hypered tech pan.  I took 4 more
> TP shots Saturday night, none came out.  I have not had any astro shots
come
> out.  Four tries now and all sessions black negs.  I am thinking I should
> only be going 4-6 mins in d19?  I went 8 minutes on Saturday night and all
> black negs again.
> I took daytime shots used the same developer for 8 minutes and the shots
> came out.
> At first I kept trying to blame something else, but it must be the
hypering
> developing combo ain't a workin.  These exposures Saturday were Halpha
> filter, Pentax SDUF II @f4, 35mm TP 30-60 minutes.
> Any tips?
> thank very much
> Brian
> ----- Original Message -----
> From: "Brian Sledz" <brianhome@email.msn.com>
> To: <astro-photo@seds.org>
> Sent: Wednesday, November 21, 2001 10:32 AM
> Subject: Re: [APML] Black Negs
>
>
> > Hi Chuck and Kirk,
> > Yes the whole strip was black.  I had to hold it on a halogen light to
see
> > one spot where the image ended and there was a space.  I didn't think
the
> > age would matter.
> > Back to the drawing board.
> > Happy Thanksgiving
> > Brian
> > ----- Original Message -----
> > From: <KGKIRKLEY@aol.com>
> > To: <astro-photo@seds.org>
> > Sent: Wednesday, November 21, 2001 8:00 AM
> > Subject: Re: [APML] Black Negs
> >
> >
> > >
> > > In a message dated 11/21/01 7:29:23 AM, brianhome@email.msn.com
writes:
> > >
> > > >Hello,
> > > >
> > > >I shot some Lumicon Hypered Tech Pan with an Halpha filter the other
> > night.
> > > >
> > > >It was in the frig for about 6 months.  I developed in d19 68o for 10
> > > >
> > > >minutes.  I shot Gamma Cyg for an hour at f6.7.  The whole roll was
> > black.
> > > >
> > > >I used brand new d19.
> > > >
> > > >Could the age of the TP do it?
> > > >
> > > >just when I thought film was easier than ccd....
> > > >
> > > >thank you
> > > >
> > > >Brian
> > >
> > > Brian:
> > > You say the whole roll was "black".
> > > Are you saying the film itself is black; ie. the negative??
> > > If this is the case, the film was somewhow exposed to light.
> > > Are all parts of the roll black; ie. leader area, sprocket hole
area???
> > > Usually six months in the fridge (freezer is better) would not cause
> this.
> > > Moisture will cause fogging, but will not make the whole roll totally
> > black.
> > > Kent Kirkley
> > >
> > >
> > >
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> >
> >
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>
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