I've been using rodinal (near-standing development) - a more stable formula for development, with the exception of streaking. Lately I've been exploring the characteristics of Tech Pan with Technidol and Docufine. As a film, I'm finding it very tempermental - the development time for Technidol way too short to control the contrast, and the changes to temperature and development times (+/- 2-4C or +/-30secs) are either too subtle or too crude. Exposing Tech Pan at 25ISO without a yellow filter, and developing 7.5 mins with the standard vertical agitation cycle 2s/30s is a very short development time for me (against a baseline time with Rodinal). Everything else remaining constant, 1 vial of Technidol in 600ml ends up blowing the highlights in some images on one roll, and underexposing another roll, with blocked up shadow detail, despite both rolls exposed in similar f16 conditions. I'm starting to think it requires more fine-tuning for metering and exposure than using slide-film at ISO 25. I've not had much help from Kodak's datasheets (which amusingly encourages 'experimenting' for a development time. Has anyone has succeeded in finding a baseline development time for predictable development in lower dilutions? I'm looking at a 1.5 - 2x dilution e.g. 1 vial in 900ml H20 or 1200ml, maybe even reducing the temperature by 1-2C. I suppose I'm looking for less contrasty results, without pulling the film beyond ISO 25. On the other hand, Docufine LC, 5.5min 20C yields flat (recommended gamma 0.45 from 5min) negatives with an even shorter development time - almost the opposite extreme of rodinal. Thoughts or recommendations greatly appreciated.