[silkstone]

Although this lens is 'fast' - i.e. wide maximum aperture - it can't work miracles and you still have to follow the normal rules about exposure settings etc. Don't be afraid to increase the ISO to 800 or even 1600 in low light - modern cameras have good high-ISO performance and you always use noise reduction software afterwards.

The 50mm f/1.4 is a brilliant lens for portraits and gives a very good bokeh (blurred backround) when used at wide apertures.