Originally posted by McLovin This is a little off topic but what should I look for when buying a used Pentax film camera (K1000, KM, or anything else)? Are they usually pretty solid or is there a good chance buying used will get me a camera that has some broken functions? Might be a stupid question but I've never bought anything used that is this old before.
The K1000 is virtually bomb proof, so you're unlikely to have problems with bits falling off. An important thing to watch for is the state of the foam light seals and especially the mirror pad. Take the lens off and you'll see a thin strip of foam just under the focus screen. Very gently prod it and see if it springs back more or less instantly. If it takes a dent and doesn't fill out again you'll need to get the seals replaced pronto. That's not a big deal and you'd be wise to get a clean, lube and adjust at the same time. In Australia they charge around $90; may be a lot cheaper where you live. It's really worth the extra - you'll have a camera that will probably outlast you.
Try out every shutter setting and aperture stop and make sure everything has a nice solid click to it. Make sure the light meter works. Check the advance lever works smoothly and returns properly. With the lens off, look inside while you operate the shutter and make sure the mirror returns fully. Open the lens to its widest setting and peer through it. Look for dirt, scratches, broken parts, signs of heavy-handed attempts at repair. Check the whole camera for the same. Open up the back and make sure everything is nice and clean and the spool spindle is straight.
This may sound a lot but it only takes a few moments and you'll know you've done everything you can to get a good camera for your money. You can practice the routine with your digital before you hit the shops. (And I suggest you get your first film camera from a shop so you've got some comeback if it turns out to be a dog). Just be careful not to let dust onto the sensor, though.
I'm sure others will have more to add. Best of luck. You're in for a real treat.