To answer the last post..... yes. repeated exposure to some X-Ray at carry on will cause damage. The faster the speed of the film the easier it is to damage. At our lab we work with a number of journalist that travel extensively and have always recommend the method that Mason states above. Have your film hand checked when possable. A camera bag contains many items that may look odd to an inspector. Flash units, Meters, Power packs, etc. that would and does cause them to hold the bag within the X-ray machine for longer than average. We have seem every thing from streaking to general base fog that could only be attributed to repeated exposure to X-ray.(posted 8874 days ago)