How to Fix a Camera That Rewinds Mid-Reel
Simple fixes can rescue your camera
Anyone who buys vintage film cameras has experienced it. You’re out shooting with a new-to-you compact film camera. You’ve loaded a nice (expensive) reel of Portra or Ektar, and you’re 15 or so exposures in. You hit the shutter, and all of a sudden, the camera’s auto-rewind mechanism engages, and rewinds the film back to frame 0. Congrats, you’ve just wasted half a roll!
Cameras that randomly rewind mid-reel (and usually at different frames each time) are extremely frustrating. But luckily there are some easy fixes you can try, which can have your camera back to working order in minutes.
Basic Principles
Many compact point-and-shoot film cameras of the 1980s and 1990s had automatic rewind functions. Finish a reel, and no matter if you were shooting 24, 27, or 36 frames, the camera would automatically rewind.
How do these cameras know how many exposures are in your reel, so they know when to start rewinding? The short answer: they don’t.
Instead of relying on information about the number of exposures on your reel, these cameras employ a simple trick. After each shot, they try to advance to the next frame. Most of the time, they can easily pull the film forward one frame. But if you’re at the end of the reel, there won’t be any film left to pull out, and the camera will feel resistance when it attempts to advance. When the camera detects this resistance, it assumes you’re at the end of the reel, and rewinds.
Usually this works great. But sometimes, something creates resistance before you’ve reached the end of the reel. In these cases, the camera can interpret that resistance as the end of the reel, and rewind prematurely.
Old Mechanics
Sometimes, the mechanism on the camera itself has worn down over time--or just gotten sticky from years of sitting in a drawer. This can make it harder for the camera to pull on the film to advance it, increasing resistance and making mid-reel rewinds more likely.
If you can safely access the film advance mechanism and spin the internal parts manually, try to do this a few times to make sure everything is turning smoothly, and there’s no sticky parts of the mechanism causing resistance.
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If you have a dust-free blower (like a Rocket Blaster), try giving the mechanism a few blasts to knock out any dust and grime that might be gumming things up. And make sure you’re loading the film correctly, so that it can easily be pulled out of the canister and isn’t creating resistance.
Expired Film
Speaking of film, the film itself can create resistance, tricking your camera into thinking it’s reached the end of a reel when it hasn’t.
This is especially true of expired film, which may have begun to become brittle, may have been exposed to temperature extremes, etc. These factors can make the film harder to pull out of the canister, creating resistance and triggering an auto rewind.
If you run into lots of issues, consider saving expired film for a camera with a manual advance, or a camera with a separate rewind function like the Nikon L35AF.
Battery Issues
All the issues described above can create resistance, leading to mid-roll rewinds. But here’s the biggest reason I’ve seen (and one of the easiest to solve): depleted batteries.
Surprised? Not sure why batteries would cause a camera to rewind prematurely? Here’s how it works.
If your camera has a battery with some life left--but whose voltage has dropped a bit--it may still appear to work fine. Your camera’s electronics may function, film may advance, etc.
But because the battery is just a bit low, the camera has just a bit less pulling power than it normally would when it’s advancing to the next frame. Especially as you get towards the middle of a reel, it’s having to pull harder and harder to advance, but it’s lacking the full voltage it needs to pull its strongest.
At a certain point, the battery can get so low that the camera struggles to advance the frame--even just for a split second. This can make it think it’s reached the end of the reel, since it’s pulling and the film isn’t advancing fast enough. Tada: mid-reel rewind!
I find this often happens with Ebay cameras. The seller might try the camera out, confirm it works, and then leave a battery in it for weeks or months until the camera sells. When you get it, the battery has already worn down a bit just from sitting, and suddenly a mid-roll rewind issue appears, where the seller didn’t see one during their testing.
I had this happen on an Olympus Stylus Epic (MJUII). I thought I had to give back a $300 camera, but a simple battery change fixed everything.
If your camera is rewinding mid-reel on fresh film and its internals look good, try dropping in a fresh battery. This simple fix could have an apparently-broken camera working like new in a matter of minutes. It certainly has done the trick for me before.
Mid-reel rewinds are annoying and costly. No one wants to waste 15 or more exposures--especially if you’re using pricey pro film or a rare canister of expired stock.
With these tips, though, you can often “save" a camera that might otherwise end up on a shelf, or be sold for parts. Try these tips out the next time you have a mid-reel rewind issue and see if they work for you.
