High Key photography

[amironsi]

i saw a lot of high key photography...
can any one tell me more info about it to get me started...
is it just in portrait?
is it a lighting setup then some PP???

[akprice]

high key photography is simply overexposing your shot. just meter for you shot til you get the correct exposure and then open up 2 or 3 stops to overexpose in manual mode. you can also use a high iso like 1600 to get that grainy effect which looks good using high key photography.

[PhotosGuy]

The two shots in this post were taken at the same time with the same settings. PS provided this "high-key" effect.
http://photography-on-the.net/forum/showpost.php?p=1085870&postcount=3

Here's an example from film. It was Kodak 2745, a very high speed emulsion with great grain:
.