For years I have used proprietary formula and have finally decided to 'have a go'. I fancy making a developer like Perceptol, which I believe uses Metol as the developer ingredient. In the past I have used Perceptol as an effective means of reducing highlight density build-up, using high dilutions. I have the second edition of the darkroom cookbook and guess that D 23 seems to be a reasonable starting point. I also noticed with interest that D76H only differs by the reduction in Metol and the addition of Borax. I have a general idea of the characteristics of different agents and additives as well as the need of commercial companies to add further ingredients to make their formula keep, transport and mix effectively. It is a whole new world so I need to start with some sensible, practical recommendations in the first place. Specifically, I'm interested in other's comments on D-23 and how it differs to Perceptol and possibly Microdol-X in both makeup and performance with films such as TriX 320 and Neopan 400. -- Regards Chris Woodhouse ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.