Grainy pictures, please help.
I have been shooting with my Bessa R2A + 35mm Summicron for a while now.
I don't have the time/skill to develop the photos myself so I would drop them off at a small photolab and collect them a few days later.
I usually ask them to directly burn the pictures onto a CD so I can see them on the computer.
Although I have been using Ilford 100, Lots of my pictures turn out quite grainy.
The weird thing is that on the same roll of film, some pictures are grainy and some turn out fine.
I know this is a really basic question but aside from the speed of the film, what are the other important factors that contribute to the grain of a film?
<a href='http://www.rangefinderforum.com/photopost/showgallery.php?cat=500&ppuser=1092'>My Gallery</a>