Archived posting to the Leica Users Group, 1999/03/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]<fontfamily><param>New_York</param>The April issue (# 85) of the French magazine R=E9ponses Photo has a side-by-side test of Delta 3200 and Tmax 3200 both exposed at 800, 1600, 3200 and 6400 and developed in ID11/D76, Ilfotec DD-X, Microphen, Xtol, Tmax and Microfine. That makes 48 different tests!! Both films give very good results at 800 with all developers, but so do all 400 films pushed one step, so why use 3200 asks RP. At 1600 Microphen gave very good results with both films, as did Tmax developer and Microfine with Tmax 3200. At 3200 the Tmax developer with Tmax 3200 gave the best results, other combinations gave good results. At 6400 no combination was very good. The reason =3D as we know ;-) =3D is that these film are true ISO 800-1000-max 1200 film so that exposing at 3200 is already pushing one-and-a-half to two steps. BTW, Anchell & Troop in their new 'Film Developing Cookbook' recommend another approach to obtaining good results when pushing film: use Xtol or FX 37 and dilute twice as much as you normally do and increase development time 50-100% for a two-stop push. They say Tri-X can be pushed three steps (i.e. to 3200) with acceptable results. I have found the same. Detailed times for almost all films are in the book. </fontfamily> - -- christer almqvist eichenstrasse 57, d-20255 hamburg, fon +49-40-407111 fax +49-40-4908440 14 rue de la hauteur, f-50590 regn=E9ville-sur-mer, fon+fax +33-233 45 35 58