Let’s be honest for a second. Is there anything worse than shooting an incredible roll of film on a trip, only to fly home, drop it at the lab, and wait two weeks to see if you actually nailed the exposure? If you're anything like me, patience is not your strong suit when it comes to photography. You want to see what you captured while the memory of stepping out onto that busy street or hiking up that overlook is still totally fresh.

A few years ago, I realized I didn't actually have to wait. What if I told you that you could see your negatives the exact same night you shot them, hanging right there on your hotel room shower rod? Developing film in a hotel bathroom might sound a little unhinged, but it’s actually one of the most rewarding and surprisingly easy things you can do as an analog photographer traveling the world.

It doesn't take a ton of gear, it doesn't leave a mess, and pulling a perfectly developed strip of film out of a tank while sitting on a hotel bed is basically pure magic. Here is my complete, no-nonsense guide to building a tiny, portable darkroom that fits perfectly in your carry-on luggage.

Black and White is the Way to Go

Before we start packing your bags, let's talk about the film itself. While you can develop color film (C-41 process) on the road, I highly recommend sticking to black and white for hotel processing. Color development requires precise temperature control—usually around 102 degrees Fahrenheit—which is a massive headache when you're just relying on a hotel sink and a bucket of ice from the hallway machine.

Black and white chemicals, on the other hand, are incredibly forgiving. They usually run at room temperature (around 68 degrees Fahrenheit), which is usually exactly what comes out of the "cold" tap in most hotels. If the tap water is a little too warm, one or two cubes from the hallway ice machine will drop it right where you need it to be.

The Minimalist Packing List

When you are traveling, space is everything. You cannot lug massive graduated cylinders and gallon jugs of developer around with you. Luckily, everything you need to develop black and white film can pack down into the size of a shoebox. Here is exactly what you need to bring:

• A Changing Bag: Do not skip this. You might think you can just turn off the hotel bathroom light and shove a towel under the door, but a street light will always find a way in. A changing bag guarantees total darkness so you can spool your film onto the reels safely.
• A Daylight Developing Tank: A two-reel plastic Paterson tank is the industry standard for a reason. You can even stuff your socks or extra film rolls inside it while traveling to save luggage space.
• Scissors and a Can Opener: You'll need the scissors to cut the film leader, and the can opener (if you're shooting 35mm) to pop the top off the film cassette.
• A Small Digital Thermometer: Just a cheap meat or liquid thermometer works perfectly to make sure your tap water is the right temperature.
• Binder Clips: Forget bulky film clips. You can steal two binder clips from your office. Use one to hang the film from the shower curtain ring, and the other clamped to the bottom of the negative strip as a tiny weight so the film doesn't curl while it dries.
• A Small Measuring Beaker: A cheap 500ml plastic measuring cup from the dollar store is all you need. You can mix your chemicals right in it.

Choosing Your Travel Chemicals

Bringing chemicals on a trip requires a little strategy. You do not want to fly with massive bottles of liquid, and you really don't want a heavy powder bag bursting in your luggage. The secret to a portable darkroom is highly concentrated liquid chemicals.

For your developer, I heavily rely on Rodinal or HC-110. These are thick, almost syrupy developers that you use in tiny, tiny amounts. You can mix them directly with water as a "one-shot" developer. To pack this, I buy a small travel-sized toiletry bottle (under 3 ounces if I'm carrying on) and fill it with my concentrated developer. Then, I pack a cheap plastic medication syringe to easily measure out the 5ml or 10ml I need for the hotel brew.

For the stop bath? Skip it. Just rinse your tank out with fresh tap water for 60 seconds between the developer and the fixer. It works perfectly and saves you from carrying a third chemical.

For the fixer, look for a rapid liquid fixer concentrate. It's a bit bulkier than your tiny developer syringe, but you can easily pour enough for one or two trips into a secure, leak-proof travel bottle. I always wrap my chemical bottles in two Ziploc bags just to be safe. TSA does not care about small amounts of photo chemistry in your checked bag, but I always label the bottles clearly with masking tape so they don't look overly suspicious.

The Hotel Washroom Workflow

So, you’ve shot your roll, you’re back in the room, and it's time to develop. The process essentially breaks down into four easy steps.

Step One: Spooling. Kick back on the hotel bed, put your tank, lid, reels, film, can opener, and scissors into the changing bag, and zip it up. Close your eyes, pop the film cassette, and spool it onto the plastic reel. Once it's spooled and safely locked inside the light-proof tank, you can take it out of the bag.

Step Two: Temping the Water. Head into the bathroom and turn on the tap. Use your thermometer to fine-tune the hot and cold knobs until the water running out is steadily hitting roughly 68°F (20°C). Fill up your plastic measuring cup, squirt in your exact measurement of developer concentrate using your syringe, and stir it up.

Step Three: The Process. Pour your diluted developer into the tank, start a timer on your phone, and do your agitations right over the sink. Nothing beats standing in a hotel bathroom in a new city, flipping a Paterson tank upside down every minute while listening to music. When the time is up, pour the developer down the drain. Rinse the tank with tap water for one minute, then pour in your pre-mixed fixer. Let it fix for about 4-5 minutes, agitating occasionally.

Step Four: The Wash. Pour out the fixer. To save massive amounts of water, use the Ilford washing method: fill the tank with tap water, invert it 5 times, dump it. Fill it again, invert it 10 times, dump it. Fill it a final time, invert it 20 times, and dump it. If the local water is really hard and leaves spots, run down to a pharmacy, buy a tiny bottle of distilled water, and do a final quick rinse with that.

Hanging Up and Admiring Your Work

To dry your film, carefully peel it off the reel and wipe the excess water off by gently running it between two wet fingers (make sure your hands are clean first to avoid scratching the emulsion). Grab your binder clips, attach one end of the film to the metal rings on the shower curtain rod, and clamp the second clip at the bottom of the roll to hold it straight.

Now comes the best part. Turn on the bathroom light, hold up your phone's flashlight behind the hanging strip, and look at your negatives. It is an amazing feeling seeing a café you were sitting at just three hours ago cemented right there on the celluloid. By the time you wake up the next morning, the film will be dry, ready to be cut, sleeved, and safely transported back home.

Before you pack your travel darkroom, you obviously need a solid camera to shoot all that film with. If you're looking for a reliable, compact travel companion, the shop runs a great selection of thoroughly tested vintage gear. Check out our point and shoot cameras for something effortlessly pocketable, or grab an SLR camera if you want full manual lenses and creative control on the road. We also carry plenty of light meters to make sure your exposures are dead-on before you even mix up any chemicals.

Don't let the idea of developing intimidate you. Taking your darkroom into a hotel room changes the entire pace of your travel photography. It turns an evening of just hanging out watching terrible hotel cable tv into an active, creative ritual. Grab a tank, mix up some chemicals, and happy shooting out there!