Basic discussion of photography: Does X-ray harm photographic film?

Generally, films are inspected manually without X-ray machines.

Unexposed film will accumulate under the influence of X-rays. Even if the film sensitivity is only 100, don't let it take more than 5 shots. X-rays still have an effect on the film, the difference is only the depth. From light to light, the particles become thicker and slightly colored, from heavy to odd stripes and even dense fog.

The volume of ISO 800 has passed the 3dx 6000 airport scanner five times, which is basically useless. The picture comes from the internet. Films with sensitivity below ISO 400 will basically be fine once or twice, and films with sensitivity above ISO 400 will hang up. The higher the sensitivity, the greater the impact.

Not only films with high sensitivity, but also reverse films and movie films should try not to pass the airport security check. It is important to note that different security machines have different X-ray powers. Just because you are safe at this airport doesn't mean you can go to another airport without being affected.