RE: [Leica] how can I know the light compensation in indoor photo

["Lee, Ken" <ken.lee@hbc.com>]

Mark,

Is it possible you are looking at developer exhaustion? I seem to remember
the discussion that Xtol needed 100 - 150 ml of stock solution per roll as
per Kodak. Even at 100 ml per roll at 1:3 that's 3200ml of liquid for 8
rolls. How big are your tanks?

Ken

> -----Original Message-----
> From:	Mark Rabiner [SMTP:mrabiner@concentric.net]
> Sent:	Thursday, December 09, 1999 2:03 PM
> To:	leica-users@mejac.palo-alto.ca.us
> Subject:	Re: [Leica] how can I know the light compensation in indoor
> photo
> 
> Hello Nathan and Grégoire!
> mind if I but in on your two issues here? I'm going to leave your whole
> post in.
> I too am perhaps not getting 1600 out of my Delta 3200 with Xtol 1:3 for
> 20
> minutes at 70 degrees agitation once per minute.
> I ran a tank of 8 rolls in a two liter metal tank and got thin negs that
> will
> need another grade and a half of contrast to print but many of them are
> thin in
> the shadows. (Some are ok in the shadows so I'm a little up in the air as
> to
> what the heck is going on)
> So next tank I'm going to go Xtol 1:1 instead of 1:3 and give it 17
> minutes. I
> had also gotten some what looked like diachronic fog which I'm assuming
> the
> higher concentration will remedy.
> My Delta 400 1:3 at 17 minutes looks studpendious though like the results
> I used
> to get with Pan F and Rodinol only 4 times faster speed. I'm a happy
> camper on
> that front! I am also using that film with studio strobes instead of
> medium or
> slow speed films now. I'm getting that nice glow you want to get from my
> results
> which have been 8x10 multigrade fiber prints. Those are clean looking
> negs.
> 
> On the metering of black and white in tungsten I think of it this way.
> Meters have varying sensitivity to different wavelengths and so do films.
> Your meter may be under sensitive to the warm end but your film (TriX?)
> might be
> hypersensitive to reds (warm tones) and therefore the two have cancelled
> themselves out.
> You'll know when you look at your negs if your indoor stuff is coming out
> thin
> or not and to therefore compensate.
> That's why it's good to not use too many films and really know your film.
> All
> these finer points become intuitive. And not have too many meters.
> That's how I see it!
> Mark Rabiner