[LargeFormat] Processing 4X5 recommandations.

[John Harmon]

Les,
Yesterday I developed my first batch(5 sheets) of Arista 125  4x5 film in
d76 diluted 1:1.  Eleven minutes. I used 500 ml of developer in a jobo
expert drum  3010. I haven't printed the negatives yet, I suspect the film
was not developed to its fullest potential. I also shot some tmax 100 and
developed in tmax rs, 500ml for 4 sheets this film has more snap on the
light table.
In the future I will be more careful about the volume of developer per
sheet.
Happy New Year To All
John Harmon
www.JohnHarmon.com

----- Original Message -----
From: "Les Newcomer" <lnphoto@twmi.rr.com>
To: <largeformat@f32.net>
Sent: Sunday, December 30, 2001 10:09 AM
Subject: Re: [LargeFormat] Processing 4X5 recommandations.


>
>
> In "The Film Developing Book" Anchell and Troop have this to say about
> volumes of developer:
>
>
> "Although it is true, As Kodak claims, that 100 ml of undiluted D-76 is
> sufficient to develop 8x10 inches of film. it may not always be enoguh
> to develop the film to its fullest potiental. The amount of solution
> required to cover the film's surface should not be confused with the
> amount of developer required to fully develop a roll of film.
>
> To maintain quality and consistency use the following volumes for each
> 8x10 inches of film, regardless of processing method--even rotary
processing.
>
> Undilute developers--at least 250 mil per 8x10 sheet
> dilute developers-- at least 500ml (d-76 1:1, rodinal 1:25 to 1:50)
> very dilute developers-- 1 liter D-76 1:3, (Rodinal 1:100 fx2 1;1 HC-110
> 1:90 form concentrate)"
>
> These amount may sound extreme to some. but saving on developer is penny
> wise and pound foolish. Do not try to make photography cost effective by
> skimping on film developer. You will never be able to maintain quality
> and consistency, even if the results appear adequate."
>
>
>
> 8x10 is equivelent to 4 (4x5) 2(5x7) 1(120) or (1) 35mm x36xp
>
>
> To extrapolate from the data... If those 4x5 Nikor carousel reels use a
> standard 16 oz tank ( 1/2 liter or 500ml) then you can process 8 sheets
> of undiluted, 4 sheets of diluted or 1 sheet of very diluted.
>
> A yankee tank takes 55 oz I believe,
>
> 55oz of undiluted devloper will handle  26 sheets
>
> 55 oz of diluted  developer will handle 13 sheets
>
> 55 oz of very diluted developer will handle 6.5 sheets.
>
>
>
>
> So if you are into stand developement, very diluted developers, the deep
> tanks are the only way to go. The smaller tanks seem to starve the film,
> at least in Anchell's opinion.
>
>
> Les
>
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