Hi All, I've decided its time to do some testing to get my exposure and development nailed. I am looking at Hp5+ and Rodinal 1:50. I am wanting to standardise for Grade 2 on Ilford Multigrade IV RC. I've troubleshot my enlarger/darkroom and am now getting what I think are reasonable contrasts based on stop tablet prints (about 5 stops range, both contact and projected). When I do a 'proper proof' contact sheet (minimum time to max black at film base+fog) I am still getting very flat and quite dark prints. I have recently had the camera CLAd and am assured that metering/speeds are fine. I thought initially my EI (400) was too high, as a lot of people claim HP5+ needs more exposure. However, I am not so sure now. I did a test exposing a grey card from -6EV to +6EV compared to that metered. I am getting EVERY SINGLE FRAME to have distinct tones in a "proper proof" at grade 2 (although first and last are very close to black/white) This seems crazy. The dead on metered exposure looks a touch short of a medium grey. This suggests to me that I am under developing. What does this mean? I am thinking I need to try a much longer development time. I am using 11:00@20degC as per the massive dev chart, and am using what I figure should be fairly adequate agitation (slow constant for a minute at the start, then 4 inversions every minute). I am checking temperature and its dropping from about 21C at the start to about 19C at the end. I would expect this would get me in the ballpark but it seems quite a fair way off. How does this compare with other peoples' experience? The other thing I'm not getting is the long range below the metered exposure of a grey card (Zone V if you will). Based on zone system type thinking, I should only be getting 3 or so exposures below it as distinguishable, but I have twice that. Am I confusing myself with trying to include zone system considerations here? Should I just take the extra underexposure latitude and not worry about it? Or am I over exposing? Any feedback would be greatly appreciated.