Quick answer
Load 120 film in subdued light by seating the full spool in the supply chamber, threading the backing paper leader into the take-up spool slot, and advancing until the start mark aligns with the camera’s index. Close the back and wind to frame 1. The most common mistake is letting the paper unspool or loading in bright sun, which fogs the film.
Prepare your camera and film before you start
Work in shade or indoors. Direct sun can fog the film through the backing paper, especially near the edges. Open the camera back and check that the supply and take-up chambers are clean and free of debris. If your camera uses a removable insert or film back, remove it so you can see the spool paths clearly. Have your 120 roll ready—Ilford Delta 3200 Professional Black and White Negative Film (120 Roll Film) is a common choice for low-light work, but any 120 roll loads the same way. Keep the film in its foil until the last moment.
Insert the full spool into the supply side
Hold the film roll so the backing paper’s loose end points toward the take-up spool. The supply spool usually has a slotted or keyed end that fits a spindle or pin in the camera. Seat it firmly—if it wobbles, it can cause uneven tension and overlapping frames. Do not remove the paper band yet; it keeps the roll tight. Once the spool is seated, remove the band and let the leader unroll just enough to reach the take-up spool. If the leader curls back on itself, gently straighten it.
Thread the backing paper into the take-up spool
The take-up spool is empty and has a slot or clip. Insert the tapered end of the backing paper into that slot. It should go in about 1–2 cm and be centered. If the paper is not centered, it will wind unevenly and may jam or scratch. Turn the take-up spool by hand or with the camera’s advance lever to wind the paper once around. Make sure the paper feeds straight, not at an angle. A common mistake is inserting the paper too far, which makes it hard to remove the spool later, or not far enough, which lets it slip out.
Align the start mark and close the back
Continue winding slowly until the start mark—usually an arrow or the word START—lines up with the index mark on the camera body or film back. Do not wind past it; if you do, you lose frames. Some cameras have a red dot or a triangle; check your manual if unsure. Once aligned, close the back firmly until it latches. If the back does not close easily, the spool may not be seated correctly. Reopen and reseat it rather than forcing it.
Advance to frame 1 and check tension
Wind the advance lever or crank until it stops at frame 1. The counter should read 1. If the advance feels tight or you hear grinding, stop and check that the paper is not misaligned. A loose take-up spool can cause the film to slip, leading to blank frames. Once at frame 1, you are ready to shoot. After the last frame, wind the film completely onto the take-up spool before opening the back. The backing paper will protect the exposed film until you develop it.
Step-by-step loading checklist
- Work in shade: Load indoors or in the shadow of your body. Direct sun can fog the film through the backing paper. Checkpoint: If you can see your shadow sharply, find shade.
- Seat the supply spool: Insert the full roll into the supply chamber until it clicks or sits flush. A loose spool causes uneven spacing. Mistake to avoid: Forcing a spool that does not fit—check for a removable insert.
- Thread the take-up spool: Insert the tapered leader into the take-up slot about 1–2 cm, centered, then wind one full turn by hand. Checkpoint: The paper should feed straight, not at an angle.
- Align the start mark: Wind slowly until the start arrow lines up with the camera’s index mark. Do not overshoot. Mistake to avoid: Winding past the mark—you will lose the first frame.
- Close the back and advance to frame 1: Close firmly until latched, then wind until the counter reads 1. If it feels tight, reopen and reseat the spools. Checkpoint: The advance should feel smooth with even resistance.
Film and gear that work well
- Ilford Delta 3200 Professional Black and White Negative Film (120 Roll Film): Ilford Delta 3200 Professional Black and White Negative Film (120 Roll Film) is a high-speed film available at The Camera Exchange with a price guarantee and rent-now option. Its 120 format loads exactly like any other roll, and the high ISO helps in low light where you might otherwise need a tripod. The rent-now option lets you test it before buying a full box.
