I got my hands on an old Keystone 8mm film camera in mint condition (paid $10 at a thrift store in BFE Nevada) and I want to try it out.

I did some searching around the net and found a bunch of different types of film. What would be a good all-purpose 8mm color outdoor film, and who stocks it?

I have a place in town that will process and convert it to digital, but the camera just seems so lonely without any film in it.

-Chris

Standard pre-paid Kodak 40asa super 8mm is probably the best bet for you to try out the camera. Most larger camera shops still stocked it last time I checked (haven't shot any s8mm for at least three years). Try these guys for more info http://www.widescreen-centre.co.uk/Catalogue/Motion_picture_division.html

If it is an 8mm camera, not s8mm, then you might be out of luck. I'd recommend getting hold of a newer camera and shooting s8mm instead!

If it's "regular" double 8mm, you're probably out of luck at most retailers. Kodak discontinued that years ago.
HOWEVER: there are a couple of sellers on the web that sell color and B&W 8mm film.
I don't know if they are re-perforating 16mm or actually produce the old format.
Regular 8mm was 16mm wide in 25' long rolls. You ran it through the camera once, flip the roll over and run it through again. The lab would slit it to 8mm an splice the 2 25" pieces together for a 50' reel.
It was usually shot and projected at 16fps (later, 18fps).
There is a lab called Wayne's (mid west?) that is one of the few left in the world to process old Kodachrome 8mm.
Hope this helps.
Ken

This is a good place to buy from.

http://members.aol.com/Super8mm/JohnSchwind.html

Check with these guys too: http://www.pro8mm.com/main.php

While I was a student I ordered it straight from Kodak for cheap with my educational discount.