There isn't a lot you can't shoot in a city at f1.4 @1/30th with 400 asa film. With the Leica I can go down to 1/15th and still get acceptable results, or even down to 1/8th, if I'm leaning against something...
During the day I just use an ND filter if I want to shoot wide open.
In my opinion 400 asa strikes a very good balance. It works in the brightest of sunlight (f16 @ 1/500th), yet still has the reserves to work indoors during the day and in to the night. And of course you can push to 1250/1600 in an emergency.
The ND filter is the trick for added flexibility on very bright days.
Obviously Tri-X and HP5+ come to mind, but TMY2- 400 has the advantage of offering 400 asa speed and the grain of a traditional 100 asa film. So, TMY-2 400 almost is a universal film. It's also a very linear film, so you get lots of shadow detail at night.
Last edited by Harry Lime; 02-21-2013 at 08:55 PM. Click to view previous post history.