step-by-step guide to loading 120 film into medium format camera backs

Step-by-Step Guide to Loading 120 Film into Medium Format Camera Backs When using a medium format camera, one of the fundamental skills to master is loading 120 film into the camera back. This process may

Written by: Megan Walsh

Published on: January 7, 2026

Step-by-Step Guide to Loading 120 Film into Medium Format Camera Backs

When using a medium format camera, one of the fundamental skills to master is loading 120 film into the camera back. This process may seem intimidating at first, but with practice, it can become second nature. This detailed guide will walk you through the intricacies of loading 120 film smoothly and efficiently.

What You’ll Need:

  • 120 Film Roll: Choose from a variety of brands and film stocks based on your photographic needs.
  • Medium Format Camera: Ensure your camera is compatible with 120 film.
  • Dark Bag or Dark Room: Essential for preventing light exposure while loading.
  • Scissors or Film Cutter: Needed to trim the film if necessary.
  • Camera Manual: Helpful for model-specific loading instructions.
  • Changing Tent (optional): A useful tool if you don’t have a dark room.

Step 1: Gather Your Supplies

Before you start the loading process, gather all your necessary supplies in a clean, organized space. Ensure that your medium format camera is ready to accommodate the film. Familiarize yourself with the camera’s back or film compartment if it’s your first time.

Step 2: Prepare Your Workspace

If you’re working in a darkroom, turn off the lights and ensure your working surface is clear of items that might clutter your shooting process. If you’re using a changing bag, assemble all your gear inside to allow for a portable dark environment.

Step 3: Open the Camera Back

Carefully open the back of your medium format camera. For most models, this involves a latch or a button. Always consult your camera manual for specifics to avoid damage to any components.

Step 4: Remove the Film Spool

Locate the take-up spool, which is usually at the bottom portion of the film compartment. Remove any old film spool if present. Make sure the area is clean, free from dust, so the film will load smoothly without any obstructions.

Step 5: Insert the New Film

Retrieving your roll of 120 film, ensure its packaging is intact before taking it out. You may want to practice this step in a dark environment first to get a feel for the process:

  1. Labeling: Notice that 120 film has a “film leader,” usually marked with a paper backing.
  2. Orientation: Check that the film is positioned correctly, with the emulsion side (the dull one) facing the lens side of the camera.

Place the new film roll onto the designated spool on the camera. Usually, this is the upper part of the camera back.

Step 6: Threading the Film

Gently pull the film leader from the roll and start threading it through the camera’s film path. Make sure to:

  • Guide the film through any rollers or guides specific to your camera model.
  • Ensure the film is aligned correctly in the track to prevent jams during winding.

Step 7: Attach to the Take-Up Spool

Once the film is threaded correctly, pull it down and attach the end of the film leader to the take-up spool. You can tuck the end of the film or use a small piece of tape if necessary. Wind the take-up spool a few times to ensure that the film is securely in place.

Step 8: Advance the Film

Most medium format cameras will have an advancement mechanism, either manual or automatic. Gently advance the film to take up any slack and to prepare the film for exposure. Watch for a small window that indicates the format number—make sure it is on the correct frame (usually the first frame at the start).

Step 9: Check and Secure

After advancing the film, check the entire system to ensure everything is intact and not skewed. Look for:

  • Smooth movement of the film through the camera’s rollers.
  • Proper placement of the film on both the supply and take-up spools.
  • Correct registration of frame count markers.

Step 10: Close the Camera Back

Carefully close the camera back once you’re confident everything is in its right place. Ensure everything clicks into position properly to avoid any light leaks during shooting.

Step 11: Test the Film Mechanism

Before heading out to shoot, it’s good practice to test the film advance mechanism without actually exposing any frames. Look through your viewfinder and activate the shutter while advancing the film. This ensures that the film is progressing correctly and helps prevent misloading errors.

Step 12: Start Shooting

Now that the film is loaded correctly, you can start capturing beautiful medium format images. Be mindful of your frame count, as each roll typically has 10 or 12 exposures, depending on the camera used.

Final Tips for Loading 120 Film:

  • Always take your time; rushing may lead to errors.
  • Practice makes perfect. Load and unload film several times in a dark environment to build confidence.
  • Understand that differences may occur between various camera brands and models; always refer to your camera’s manual for specific tips.

By following this detailed guide, you’ll master the skill of loading 120 film into medium format camera backs efficiently, enabling you to focus on the creative aspect of your photography.

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