In the past decade, film has become far less grainy and is greatly reduced in contrast. New technology has produced film with T-grain emulsions. These films use light-sensitive silver halides (grains) that are T-shaped, thus rendering a much finer grain pattern. Films like this offer greater detail and higher resolution, meaning sharper images. The traditional rule that slower film produces finer grain is no longer true. The finer grained films are still slower, that is, the ISO rating is lower, but they are much less grainy and have much less contrast.
A recent development in black and white film is a process that uses color film technology to develop and print black and white films. It is easy to take a roll of this film to a one-hour processor to get back prints quickly. However, the film has a purple tint to it, as do the prints. Additionally, because of the color processing, the life of the film or prints is highly suspect
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