Here is some info I found on the subject, Diane.
Cameras. Digital cameras are considered safe, but you'll have to take special care with conventional cameras, or more specifically, the film. The International Imaging Industry Association (I3A) says you should never pack unprocessed film or disposable cameras in your checked baggage because it can be damaged by higher X-ray doses. Otherwise, the I3A maintains that you can safely pass film rated at speeds below ISO 1000 through the scanners at checkpoints. But passengers have the right to request a hand inspection. What's more, some passengers are randomly asked to submit carry-ons for an additional level of scrutiny, apart from general checkpoints. Because higher-intensity or multiple scans may cause streaks or fogging when your pictures are exposed, even on lower-speed film, you should again ask for a hand inspection. (This is especially true overseas, where stronger X-rays may be used.) You can expedite matters by packing film in a clear or mesh bag. But Lisa Walker, co-executive director of the I3A, says security personnel aren't always clued in on your rights and may give you a hard time. "There's a great deal of inconsistency from one security checkpoint to the next," she says. "According to the FAA, people have the right to request hand inspection of film ... but with heightened security, requests for hand searches are not being granted, at least not consistently."