Originally posted by skierd I know you guys are in the U.K. and all, but shooting 400 what do you do when the sun comes out? Use ND filters? Even if you have a top shutter speed of 1/2000, you're limited to f/8 or smaller outdoors. With my cameras I'm limited to 1/500, so I'd be stuck at f/16 or overexposing by several stops. Conversely if I go inside and drop ~8 stops of light, I can do that with 100 speed film with a fast lens and still be hand-holdable. At least with a rangefinder with a normal lens...
If your maximum shutter speed is 1/500th second a neutral density filter may be a good idea.
If you are shooting BW you might want to try a yellow-green filter (-1 to 1.5 stops) instead.
IMO it improved my BW photos so much I now use one on my rangefinder camera at all times.
With any type of camera it's advisable to choose film speed depending on lighting conditions.
I keep ISO400 and ISO100 film in my bag, and choose that which allows use of middle apertures.
Also it's often very bright here near the beach, and I try never to shoot around midday.
Chris