I'd say there no developers that will make Fomapan 400 a true 400ISO film. The ISO film speed is well defined and part of this definition is the contrast of the developed film. In a way the chart isn't accurate, as the "speed" might hit the 320 ISO mark, but with excessive contrast. So, if you want to keep contrast to reasonable levels, then EI200 should be about right. Of the developers you mentioned, Xtol would be my choice, as it gives the most film speed. HC110 on the other hand isn't that good in this. Besides, you'd need to find development times somewhere else, based on somebody else's tests. This might work, but it's not guaranteed.
Last edited by Anon Ymous; 01-20-2011 at 03:05 AM. Click to view previous post history.