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Re: [OM] B&W film development for Zone System

Subject: Re: [OM] B&W film development for Zone System
From: Michael Wong <mialop.wong@xxxxxxxxx>
Date: Fri, 10 Apr 2015 07:42:17 +0800
I aslo take the digitaltruth as reference. However, it shown the data for
pushing with factor close to 1.4X. I'm not sure it's appropriate for N-1,
N-2 develpment.

Cheers,
Michael

On Friday, 10 April 2015, Ken Norton <ken@xxxxxxxxxxx> wrote:

> > I understood the rule of Expose For the Shadows, Develop for the
> > Highlights. As my knowledge, I determine the area of zone 3 and meter the
> > highlight area is zone 8. Then I have to develop the film with N-1 to
> > reduce highlights to zone 7. Am I correct?
>
> You are correct. N-1 does move Zone 8 down to Zone 7. Usually. What
> N-1 does is move Zone 9 down to 8. All the rest compress downward
> some, but not as much. 8 will almost reach 7, 7 is almost 6 and 6 is
> about 5.5. From there on down, you don't see much change at all.
>
>
> > I'm confusing that how many reducing time is correct. I use Kodak HC110
> > developer and make different dilution for different contrast of film. I'd
> > control the water temperature in 20ºC & 7 mins developing time. Normally
> > I'll develop film a bit thick (over) for easier printing in darkroom.
>
> I use the tables at digitaltruth.
>
> http://www.digitaltruth.com/devchart.php
>
> --
> Ken Norton
> ken@xxxxxxxxxxx <javascript:;>
> http://www.zone-10.com
> --
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