The film you choose will depend entirely on the results required.

There are 3 main choices.......

Black and White - Will give black and white prints.

Colour Negative - Will give colour prints

Colour Transparency - will give slides for projection.


In general terms, the slower the speed of the film, the better
will be the image quality. Film speed is a measure of it`s
sensitivity to light, and is measured by an arbitary system -
ISO. 

Thus, a 400 ISO film is considered `fast`, being very sensitive
to light. The grain size is large, and the image thus tends to be
less sharp.


A 50 ISO film is `slow`, and has a fine grain size giving sharp
results.

A good general choice for all purposes, not just monitor
photography, would be 100 ISO.


Processing is the other point to consider. Usually, black and
white is processed and printed by the user, but commercial
services are available. Colour print processing is widely
available, but there is a tendancy to `get what you pay for`.
Some people may also home process this material.

Colour slides can be home processed, but there is little
advantage other than speed. Many slide films come with pre-paid
processing. Results are returned ready for projection. Pro film
is bought without processing, which is available from many labs.
Here the advantage can be speed, specialist processing, or return
of work unmounted as a film strip.




One medium not mentioned yet, but probably of interest to those
requiring quick work for presentations, is that by Polaroid.
Black and white and colour slides are available in 35 mm. format
in minutes. The penalty is some quality loss.