APUG - View Single Post - Pink or Magenta Cast with T-max, new Tri-X, and other films (not blue or green cast)

dr bob · 02-07-2003, 06:56 PM

</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Les McLean @ Jan 16 2003, 03:47 PM)</td></tr><tr><td id='QUOTE'>Guy,

I did not make it clear in my reply, when the negative is placed in the fix the antihalation layer is removed.</td></tr></table><span class='postcolor'>
The antihalation dye on Kodak films is removed fairly completely in the developer. The residual pink, magenta, or purple cast on b&w negatives is not due to the antihalation dyes but is something else. Kodak seems to like to use the existance of the color to indicate incomplete fixing. This may be true if the color is intense. Actually the color will diffuse out in a simple water bath or HCA. I just allowed my MF reels to rest in water for around 5 - 10 minutes. The water becomes colored and the film clears. Different format films of the same type, eg. TX-120 and TX4x5 clear at different rates. The 4x5 TX clears very rapidly, like in a minute or two. I do not have a handle of the source of the color, but it is not the antihalation dye(s).

Truly, dr bob.

02-07-2003, 06:56 PM	#12 (permalink)
dr bob Join Date: Sep 2002 Location: Annapolis, Md Posts: 871	</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Les McLean @ Jan 16 2003, 03:47 PM)</td></tr><tr><td id='QUOTE'>Guy, I did not make it clear in my reply, when the negative is placed in the fix the antihalation layer is removed.</td></tr></table><span class='postcolor'> The antihalation dye on Kodak films is removed fairly completely in the developer. The residual pink, magenta, or purple cast on b&w negatives is not due to the antihalation dyes but is something else. Kodak seems to like to use the existance of the color to indicate incomplete fixing. This may be true if the color is intense. Actually the color will diffuse out in a simple water bath or HCA. I just allowed my MF reels to rest in water for around 5 - 10 minutes. The water becomes colored and the film clears. Different format films of the same type, eg. TX-120 and TX4x5 clear at different rates. The 4x5 TX clears very rapidly, like in a minute or two. I do not have a handle of the source of the color, but it is not the antihalation dye(s). Truly, dr bob. __________________ I love the smell of fixer in the morning. It smells like...creativity! Truly, dr bob.