[pure-silver] Re: Pure Black and Golden.
- From: "Gene Johnson" <genej2@xxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 2 Feb 2005 21:02:43 -0800
My 2 cents is to develop normally. Develop too little and you'll just have
thin negs. Devlop too much and your contrast problem will be even worse.
Let's see if Uncle "Painless" agrees:)
----- Original Message -----
From: "Peter Badcock" <forums@xxxxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Cc: "richard l. gifford" <rlgif@xxxxxxx>
Sent: Wednesday, February 02, 2005 8:47 PM
Subject: [pure-silver] Re: Pure Black and Golden.
> Hi Dick,
>
> thank you for your valuable response. You have identified
> my problem in a nutshell. I certainly agree with you that I
> underexposed and overdeveloped.
>
> > The development advice from Way Beyond
> > Monochrome, using the standard development, would
> > probably correctly expand the average flat scene
> > normally expected on a gloomy day. But you're already
> > metering the dogs at III and VII, where you want to
> > place them, so you sure don't need any expansion.
>
> This is where my logic came undone! Instead of relating dev
> time to the weather conditions, I wouldn't have made this
> error if perhaps WBM had related it to the SBR instead...
> Oh well, nothing like learning from one's own experience :)
>
> > So it looks to me like you're both underexposed and
> > overdeveloped. The black dog is too far down, the
> > golden dog is too far up, neither dog is close to your
> > intended placement. It's asking a lot of a filter.
> >
> > Regards... Dick Gifford
>
> In fact, these two unfortunate errors I made in this
> exercise happened because:
> i) I somehow thought that a cloudy day would imply my scene
> would have a low brightness range. Wrong! The range of
> the intensity of REFLECTED light from the scene determines
> the scene brightness range (SBR) and NOT the absolute level
> of INCIDENT light (e.g. on my cloudy day). This is a subtle
> yet important difference, since we often equate bright sunny
> days with a high SBR and cloudy days with low SBR.
>
> ii) I didn't think twice about making the silly mistake of
> raising the ASA of the film in the wrong direction (from 400
> to 800). To make my testing easier, I should have instead
> lowered the ASA to overexpose the film. I know WBM suggests
> this, but somehow my logic went out the window.
>
> OK so moving on now, I have the other test roll left to
> process. The "Quick and Easy" method to customise my film
> speed and development in "Way Beyond Monochrome" suggests to
> under develop by 30% for a high contrast sunny day. And
> lower the ASA by 1 1/3 stops (e.g. 400ASA down to 160ASA).
> I've already exposed at 800ASA; is the best advice still to
> develop 30% less than the nominal(400ASA) time, or will this
> result in negatives that are too thin?
>
> regards
> Peter Badcock
>
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