Negative Processing

[Henderson]

Who's the least expensive?

[Carlos 8mm]

Hi,
If you wish to develop your own B&W films as negative, perhaps this could be useful to you:

To develop B&W negative films like Kahl 21 & 27 I´m based on processing tables of some Kodak films like Plus-X Pan 125 and Tri-X Pan 400, and works fine.

To develop Kodak Plus- X and Tri-X as negative films, Martin Baughmarten sent to me information on the matter (Thanks, Martin!)

All the films are processed with a spiral Lomo Tank:

To develop Kahl 27 (B & W neg. Film ASA 400)

Developer: Kodak D-76 (1:1); 10 minutes at 20ºC (68º F)
Stop Bath : 30 seconds (Acetic acid at 2% in 1 1iter of water)
Fixed: Kodak rapid fixer (5 minutes)
Wash (with current water: 20-25 minutes)
Final wash: Destillated water with some dops of Kodak Photo –flo: 2-5 minutes.


To develop Kahl 24 (Reversal B &W ASA 200) As negative film (overexposed 1 f-stop, just like as ASA 100 negative film):

Developer: Kodak D-76 (1:1); 10 minutes at 20ºC (68º F)
Stop Bath : 30 seconds (Acetic acid at 2% in 1 1iter of water)
Fixed: Kodak rapid fixer (5 minutes)
Wash (with current water: 20-25 minutes)
Final wash: Destillated water with some dops of Kodak Photo –flo: 2-5 minutes

To develop Kodak Tri-X as negative film overexposed 1 f-stop (ASA 100): The same process for Kahl 24 ASA 200 reversal film.

To develop Kodak Plus-X as negative film overexposed 1 f-stop (ASA 25):
Developer: Kodak D-76 (1:1) 6 minutes at 20ºC (68º F)
Stop Bath : 30 seconds (Acetic acid at 2% in 1 liter of water)
Fixed: Kodak rapid fixer (5 minutes)
Wash (with current water: 20-25 minutes)
Final wash: Destillated water with some dops of Kodak Photo –flo: 2-5 minutes


To develop Kahl 21 (B & W neg. Film ASA 100)
Developer: Kodak D-76 (1:1) 7-8 minutes at 20ºC (68º F)
Stop Bath : 30 seconds (Acetic acid at 2% in 1 liter of water)
Fixed: Kodak rapid fixer (5 minutes)
Wash (with current water: 20-25 minutes)
Final wash: Destillated water with some dops of Kodak Photo –flo: 2-5 minutes.

To know how to processig film with a Lomo tank I recomend you to read an article signed by Martin in His Web Page (The 8mm format Metadirectory):

http://lavender.fortunecity.com/lavende ... lreel.html

Hope this helps you

Carlos.