Just tried my first Hp5+ in Rodinal and i am happy.
While i waited for delivery i searched for examples and dev. times. I have so far mostly used a dilution of 1:50 for my films, but neither Agfa or Ilford recommend that dilution for some reason, some say it wont build contrast enough. Their recommendations for EI 400 in 1:25 dilution also differ, Ilford says 6 min and Agfa 8 min. I tend to like a bit contrast, so i developed this first film for 8 min in 1:25 dilution. 30 sec initial agitation and then two turns every minute.
The film came out OK, initially the neg looked a bit dense, but that was only me fooling my self since i developed my last roll of Foma 400 just earlier in 1:50 for 12 min (EI 320). I did take some shots of the same scene, just for comparison. Hp5+ is a faster film than Foma 400, no question about it, more than a stop faster, maybe even closing in on two. Grain? Yes, ohh yes. The grain is about the same for those two films, pronounced but in a pleasing way. Hp5+ is quite a bit sharper and i also liked the tonality of Hp5+ better than the Foma. It seem like Hp5+ has a more defined and so to speak compressed toe in the density curve, there is more in both the deep shadows and even more so in the highlights compared to Foma.
I also did under and over expose a scene by one stop. The Hp5+ do not seem to like over-exposure, that +1 shot lost a lot of contrast and did not look good. I got quite surprised of the under-exposed shot, it hardly even looked under-exposed, midtones where just about the same, just a tad darker on the contact sheet over all. At a quick glance it looked about the same as the correct exposure, at second look it had a bit contrast to it. Initially i even liked the one stop under-exposed shot better. It seem like Hp5+ is quite forgiving regarding under-exposure. To me this says it will respond well to pushing.
I tried to print a couple of frames on grade 2, 9x6" paper. The prints came out very good, maybe a tad low in contrast. Actually much better than i had expected for a first test-roll. I think Hp5+ will become my 400 film of choice, this first roll was very promising.