TMY2 in Xtol will do 1600 easily and show almost no grain for it - I made a 16x20" print two days ago from 6x7 TMY2@800 and you need to really concentrate on it to pick out the grain, evident only as a tiny bit of roughness in some eyelashes and otherwise invisible. In fact, I reckon the sharpness loss from TMY2 grain at that speed is less than that caused by shooting my 110/2.8 wide open. If you want really fast, I would suggest that the D3200 with some pushing in Xtol is where it's at; and give it development for one stop more than you exposed it. Pushing will only give the grain more magnitude, it shouldn't make it physically larger.
If you're feeling spendy, you could use one of the 645 systems with an 80/2 lens. I'm not sure that the extra stop in the glass would make up for the extra stop of enlargement required from the grain though.
Or a DSLR; while it's not APUG-compatible, low-light is the area where they're miles ahead of film, especially once you get into stabilisation. While I do 95% of my stuff on film, I keep one around for night-candids of people.
Last edited by polyglot; 08-21-2012 at 07:07 PM. Click to view previous post history.