Let's be completely honest for a second: flying with film is incredibly stressful right now. You spend weeks planning a trip, pack your favorite camera, carefully select your film stocks, and then you get to the airport and have to play an awkward game of negotiation with an exhausted TSA agent at five in the morning.

If you're shooting standard ISO 100 or 200 film, you might have flown under the radar and pushed your bag through the old scanners without thinking twice. But if you have developing a taste for high-speed film—things like Porta 800, Cinestill 800T, or Ilford Delta 3200—the game totally changes. Airport security scanners and high-ISO film are natural enemies, and honestly, letting your fast film go through the machine is a gamble you really don't want to take.

The Simple Science of Film Sensitivity

To understand why airport scanners hate your Portra 800 so much, we have to talk about what ISO actually means in the physical world. Film photography is basically just controlling how light reacts with silver halide crystals coated on a plastic strip. When you buy a low-speed film like Ektar 100, the crystals are relatively small and tightly packed. They need quite a bit of light—like bright sunshine—to properly record an image.

High-speed film is a bit different. To make film more sensitive to light so you can shoot in darker places or use faster shutter speeds, film manufacturers engineer the emulsion with larger silver halide crystals (or crystals with a different structural shape). Because these larger crystals are so eager to capture any light they can find, they are inherently more fragile when it comes to stray radiation.

Airport X-ray scanners use electromagnetic radiation to see through your bags. To your film emulsion, an X-ray is just a really strong, invisible burst of light. While a slower film might barely register this quick pulse, the large, highly sensitive crystals in ISO 800 film will grab onto that radiation immediately.

What Scanner Damage Actually Looks Like

If you have ever had a roll of high-speed film ruined by an airport scanner, you know the heartbreak. It doesn't look like a cool, vintage light leak. Scanner damage usually manifests as a thick, muddy fog across your entire roll of film.

On color negative film like Portra 800, this often looks like a terrible color shift in the shadows. The darkest parts of your image will turn a grainy, murky green or purple, and your overall contrast completely flattens out. Since the whole point of using an 800-speed film is usually to capture nice shadow detail in low light, the X-ray fog effectively ruins the very thing you bought the film for.

With traditional X-ray machines, the damage might look like a gentle haze. But if your film goes through one of the newer 3D CT scanners, you will likely see a thick, wavy sine-wave pattern burned straight into the negative. That is the actual rotation path of the scanner capturing the cross-section of your film roll. It is impossible to edit out.

Traditional X-Rays vs. The New CT Scanners

This brings us to the biggest headache in traveling with film today: the transition from traditional X-ray scanners to CT scanners at airport security checkpoints. You really need to know how to spot the difference.

The older machines look like standard, boxy conveyor belt systems. For decades, the rule of thumb was that film under ISO 800 was usually safe going through these traditional carry-on X-rays maybe once or twice. High-speed film (ISO 800 and above) was always at risk, meaning you still had to ask for hand checks. But the margin of error was somewhat forgiving if the agent refused.

The new CT scanners are a totally different beast. You can spot them because they usually look like large, modern, white, space-age pods with curved edges. These machines use medical-grade CT technology to build a 3D model of your bag's contents. They blast a massive amount of radiation from every angle. It does not matter if you are shooting ISO 50 or ISO 3200; a single pass through a CT scanner will absolutely fry your film.

My Routine for Safe Travels with High-Speed Film

I fly quite a bit with film, and I've learned that preparation makes the security line much less painful. Here is the exact routine I use to keep my high-speed stocks safe from the machines.

• Take it out of the packaging beforehand: TSA agents hate having to open dozens of little cardboard boxes and foil wrappers. Before I leave for the airport, I take all my film out and put the bare rolls in a clear Ziploc bag.
• Never, ever put film in checked luggage: The X-ray machines down in the belly of the airport used for checked bags are basically industrial-strength blasters. They will obliterate any film, fast or slow. Keep your film in your carry-on bag at all times.
• Request a hand check nicely: When I get to the conveyor belt, I hold my bag of film in my hand, catch the eye of the agent directing traffic, smile, and say, "Hi, I have high-speed photographic film here that will be ruined by the scanner. Could I please get a hand check?"
• Have your camera ready to open: If you have an ISO 800 roll currently loaded in your camera, you'll need to hand the whole camera over for a swab. I never load a fresh roll on travel day just in case they ask me to fire the shutter to prove it's a real camera. If I have to, I'll explain that opening the back will ruin the photos inside. Usually, they just swab the outside of the lens and body and give it back.

Lead Bags: Are They Worth It?

A lot of people ask if they should just buy a lead-lined bag to carry their film through the scanner. To be honest, I'm not a huge fan of them for high-speed film.

Here is the problem: if you put a lead bag through an older X-ray machine, the operator will just see an impenetrable black blob on their screen. What do they do? They crank up the power of the X-ray to try and punch through the lead. If the radiation does eventually bleed through the seams of the bag, your ISO 800 film is now getting hit with maximum-strength scatter radiation. And if they can't see through it, they are going to pull your bag aside to search it anyway. You might as well just ask for a hand check from the beginning and save yourself the heavy lead pouch.

Packing the Right Gear for the Trip

Traveling with cameras shouldn't mean feeling weighed down. Trying to juggle a heavy backpack, grab your shoes from a plastic bin, and gently remind TSA to swab your film is a lot to handle all at once. Having a dedicated, well-organized way to carry your gear makes flying endlessly easier. I like keeping my film rolls right at the top of my bag for easy access. If you're looking for a better way to pack your travel setup, grabbing a sturdy camera bag with customizable dividers totally changes the travel experience. It's also worth thinking about taking a smaller, everyday carry camera on trips so you aren't lugging around a massive setup. Searching for a lightweight point and shoot camera that fits right in your jacket pocket means less hassle in the security line and more fun when you finally reach your destination.

At the end of the day, do not let airport security anxiety stop you from traveling with beautiful, high-speed film stocks. Portra 800 shot at dusk in a new city feels like magic. Cinestill 800T under neon lights on a rainy vacation night is completely undefeated. Just remember to be patient, take your film out of the shrink wrap, politely ask for a hand check, and enjoy the trip.