Tell the three gauges apart with a dime and a window. Lay the coin beside the strip: film about half the dime’s width is 8mm or Super 8, film roughly as wide as the dime is 16mm. Then read the perforations. Regular 8mm has large rectangular holes, taller than wide, level with the frame lines. Super 8 has smaller, near-square holes centred on each frame. 16mm carries holes on one edge (sound) or both (silent). No projector needed, and no projector wanted: brittle film tears. Gauge does not set the price either. Footage does, billed by the foot actually transferred, with the cost mechanic explained further down.
- Regular 8mm and Super 8 are both 8mm wide. Only the perforations tell them apart.
- 16mm is twice as wide, with holes on one edge or both.
- Billing follows the foot of film actually transferred, not a flat fee per reel.
- 3 inch reel: roughly 50 ft. 5 inch: roughly 200 ft. 7 inch: roughly 400 ft.
- Most people underestimate their total footage by two times or more.
| Gauge | Width | Perforations | Sound stripe | Typical era |
|---|---|---|---|---|
| Regular 8mm | 8mm, about half a dime | Large rectangular holes, taller than wide, one edge, level with the frame lines | Rare, usually silent | 1930s to mid 1960s |
| Super 8 | 8mm, about half a dime | Smaller, near-square holes, one edge, centred on each frame | Magnetic stripe alongside the sprocket edge, often a thinner balance stripe on the far side | Late 1960s onward |
| 16mm | 16mm, about as wide as a dime | Holes on one edge (sound) or both edges (silent) | On the edge opposite the perforations when single perforated | 1920s onward, often school, church or business reels |
The box is the least reliable thing in the closet
You did not shoot this film. Somebody who is probably gone did, and the tin in your hands has been reused, relabelled and swapped for sixty years. “8mm” got written on lids by people who meant several different things by it.
The film itself never lies. Pull about a foot off the reel and hold it to a window. You do not need a projector to check, and you should not use one. A projector on brittle, shrunken film is how a one-of-a-kind reel gets torn.
Step one: the dime test for width
A dime is about 18mm across. Set the film flat and lay the coin beside it, edge to edge.
- Film is roughly half the dime’s width: 8mm or Super 8.
- Film is roughly as wide as the dime: 16mm.
- Film is clearly wider than a dime: not a common home movie gauge. Send a photo before assuming.
- Film a little wider than 8mm with a single row of holes running down the centre of the strip, between the frames: 9.5mm Pathe, the most common odd-gauge surprise in a European or mid-century collection.
That one comparison settles the biggest fork in the road. Everything after it is perforations.
Step two: read the sprocket holes
Both 8mm strips measure 8mm across, so width tells you nothing at this stage. Hold the film to the light and look at the edge, then work through the three blocks below.
How to Identify Regular 8mm Film
Regular 8mm has relatively large rectangular perforations, taller than they are wide, sitting in line with the frame lines rather than the middle of a picture. A lot of the strip’s width is given over to the holes, so the image area looks small, roughly 4.5 x 3.3mm of picture, with the holes repeating every 3.81mm down the strip. Measure four frames and divide if a single one is too small to judge: about 15mm across four frames is Regular 8. Regular 8mm dominated from the 1930s into the mid 1960s and is usually silent, so if you can date the christening or the road trip, you can usually confirm the gauge.
How to Identify Super 8 Film
Super 8 has smaller, nearly square perforations, and each one sits at the vertical centre of its frame. Smaller holes mean more of the 8mm strip goes to picture: roughly 5.79 x 4.01mm of image against Regular 8’s 4.5 x 3.3mm, with a shorter 1.143mm pitch between holes, so Super 8 frames sit closer together down the strip. If a hole lines up with the middle of a frame, you are holding Super 8. Super 8 arrived in cartridges from the late 1960s onward, and some reels carry a magnetic sound stripe along one edge. The spool is a clue too: Super 8 home reels are usually 3 inch, with a noticeably smaller centre hub than the chunkier hub on a Regular 8 spool of the same diameter.
How to Identify 16mm Film
16mm is the dime-width one, twice as wide as either 8mm gauge, and it comes two ways. Single perforated has holes along one edge only, and that blank edge is where a soundtrack lives. Double perforated has holes on both edges and is silent picture. Both turn up in family collections, especially where a relative worked in film or the reels came from a school, church or business.
Check for a magnetic sound stripe before you think about cost
Tilt the film under a lamp and look along the edge. A magnetic sound stripe reads as a narrow rust-brown or dull copper band running the full length, slightly duller than the surrounding base. Where the stripe sits is a second identification test, not just a quoting note. On Super 8 the main stripe runs alongside the perforated edge, with a thinner balance stripe on the far side to keep the roll winding flat. On 16mm the stripe runs on the edge opposite the perforations, on the blank side left free by single perforated stock. So a striped 8mm-wide strip with the band next to the holes is Super 8, and a dime-width strip with the band on the plain edge is single perforated 16mm.
If a stripe is there, the reel may hold recorded sound, a grandparent’s voice, a birthday song, and you should say so when you request a quote, so the audio is captured rather than quietly skipped. No stripe means the reel was always silent, and no transfer can add sound that was never recorded.
A stripe does not prove sound exists. Plenty of striped Super 8 was shot on cameras with no microphone. The stripe only tells you sound was possible.
Reel diameter is where the money is
Once you have identified the gauge and checked for a stripe, measure the reels. Diameter, not reel count, sets your bill, and it is where nearly every homemade estimate goes wrong.
| Reel diameter | Approx. footage | Ten of them |
|---|---|---|
| 3 inch | ~50 ft | ~500 ft |
| 5 inch | ~200 ft | ~2,000 ft |
| 7 inch | ~400 ft | ~4,000 ft |
Two people can each say “I have ten reels” and be eight times apart in footage. That is not a pricing trick, it is arithmetic.
So what does each gauge cost?
Here is the belief worth correcting, and it is the one most readers arrive with: gauge is not the price lever. Film here is priced by the foot actually transferred, so the same footage costs the same whether it arrives on one big reel or several small ones. The mechanic is identical for 16mm and 8mm, so the driver is how much film you have, not how wide it is. If a large reel is only half full, you pay for the film that is really there. Recovered sound is counted separately, by the hour of audio actually captured. A service minimum applies, and when an order falls short of it, a line called “Minimum order adjustment” makes up the difference.
Rates move, so read them in one place rather than trusting a figure copied into an article. See what film transfer costs for current rates, including the minimum and the sound recovery rate.
What actually varies, then: condition
A reel that needs splicing before it can run adds hours nobody can predict from an intake form. That is why no exact completion date gets promised here, and why rush service is quoted per order in the week you call. Optional scene by scene colour correction and grain reduction are quoted separately when you want them.
Why the film’s age matters more than its format
Acetate, the base under most home movie footage, shrinks and warps with age and can develop vinegar syndrome, a chemical breakdown that gives the reel a sharp vinegar smell. Shrunken film no longer matches the sprocket pitch it was built for, which makes it harder to move steadily through any machine.
None of that is a deadline. It is simply why an earlier scan captures more picture than a later one, and why a vinegar smell is worth mentioning when you send your photo. Frame by frame scanning captures each frame as a separate image rather than filming a projected screen, and that is the stage where most of the quality is won or lost, true HD 1080p at minimum, up to 2K, on Motion Picture Academy grade equipment. How the transfer works walks the sequence from intake to return.
More than 125,000 reels have been transferred in our own building without losing a single item, each logged at intake and tracked under a full chain of custody. For most people the real worry is not the price. It is whether the only copy of a wedding comes home.
Frequently asked questions
How can I tell if my film is 8mm or Super 8 without a projector?
Look at the sprocket holes in daylight. Regular 8mm has larger rectangular holes, taller than wide, in line with the frame lines, and they eat a visible share of the strip. Super 8 has smaller, near-square holes, each one centred on its frame, leaving more room for picture. Both strips are 8mm wide, so width alone will not separate them. If your eyes will not settle it, photograph the edge with a phone and zoom in on the picture rather than reaching for a projector, since old film is brittle and a projector is where torn reels usually happen.
What if the film is wider than a dime?
Anything clearly wider than a dime is not a common home movie gauge, and we handle 16mm separately from the 8mm gauges. If the strip is only slightly wider than 8mm and the sprocket holes run down the middle of the film rather than along an edge, it is 9.5mm Pathe, which is the odd gauge people most often mistake for 8mm or 16mm. Send a photo of the strip and the reel before assuming what it is, and we will tell you what you are holding.
How many minutes of video will my reel become?
Runtime depends on the frame rate the footage was shot at, which varies reel to reel, so the honest answer is that it varies. Work from footage instead: 3 inch is roughly 50 feet, 5 inch roughly 200, 7 inch roughly 400. Adding up by diameter gets you far closer than counting reels.
What does the brown stripe on the edge of my film mean?
That is a magnetic sound stripe, meaning the film could carry recorded audio. Its position also helps identify the gauge: on Super 8 the stripe runs alongside the sprocket edge, usually with a thinner balance stripe on the far side, while on 16mm it runs on the edge opposite the perforations. Mention it when you request a quote so the sound is captured. It does not prove sound was recorded, only that the format allowed it.
My reels smell like vinegar. Are they ruined?
Not necessarily. That smell is vinegar syndrome, the breakdown of acetate film, and it usually arrives with shrinkage and warping. Such reels can often still be scanned, though they may need extra handling. Say so up front so the reel is assessed before it goes near a transport.
Do I get my original reels back?
Yes. Originals are always returned in the same shipment as your files, and converting media does not harm it. Files come as MP4 on a flash drive for orders under 256 GB, or on a hard drive above that. DVDs can be added, priced per disc on the pricing page.
Your next step
You do not have to identify anything perfectly on your own. Send a photo of one reel and we will tell you the gauge, roughly how much film is on it, and what the transfer would involve. Request a free quote when you are ready, or read more in our guides first. No obligation, and no pressure if you decide to wait.