I recently decided to test Tmax & HP5 with several developers and dilutions for application in black & white portraiture. Starting with HP5 i exposed 2 sheets of film for each 1/3 f-stop between Iso 200 & 400 inclusively, using a Wisner Technical Field 4x5 with a Rodenstock Sirronar-S 150mm lens. I metered using a Seikonic L-398 ambient light meter. I decided to start my developer tests with D76, 1:1 - 10 mins @ 20-deg C, Jobo Expert Drum, bi-directional agitation setting "F". The resulting negatives, though thin, seem to have all the shadow detail i could want, and the highlights, though perhaps slightly under pronounced, are most definetly there. I tried contact-printing these negs using a contact printing frame and Oriental Seagull FB-VC Glossy. I dialed #2 on my Saunders VCCE XLG enlarger, set the lens at f/11 and ran a test strip for d-max using a blank strip of film which I processed together with the exposed sheets. I got 12-seconds for D-max, and started printing off the negs, one by one. The results were, well.. baffling. Each and every one of the prints was dark! Surely HP5 rated at iso 200 should not yield dark prints! (or thin negs for that matter). So now as I see it, I'm left with two options: 1) I can consider the negs "under-exposed" (which i don't truly believe they are as I've got tons of shadow detail) and re-shoot, rating HP5 at ISO 100 -160. 2) I can print above d-max for the important shades, and then use contrast to acheive my blacks As I'm not entirely sure which way to go here, any help and insight would be most appreciated.