The model
Minolta TC-1
Minolta · From 1996 into the early or mid 2000s; the exact end is not reliably documented
Ninety-nine millimetres wide, 185 grams, a 28mm G-Rokkor, and an aperture made of four round holes on a disc instead of an iris.
- Format
- 35mm film
- Made by
- Minolta
What it was
Minolta made it in Japan from 1996 at 148,000 yen, roughly a thousand dollars at the time, and it won the Camera Grand Prix that year. It is among the smallest full-frame 35mm compacts of its era at 99 by 59 by 29.5 millimetres, built around a 28mm f/3.5 G-Rokkor of five elements in five groups with three aspheric surfaces, in a titanium shell.
The aperture is the part everybody talks about. There is no iris. A rotating disc carries fixed, perfectly circular holes, and a lever swings the one you want into the light path. Four stops exist and nothing between them: f/3.5, f/5.6, f/8 and f/16. The point was perfectly round out-of-focus highlights, and whether that is worth it on a 28mm f/3.5 is a fair argument.
A black seventieth-anniversary edition of 2,500 units followed in 1998. Minolta merged with Konica in 2003, and Konica Minolta left the camera business in 2006.
What it is good for
Being about as small as a proper camera gets. 99 by 59 by 29.5 millimetres and 185 grams, with a 28mm lens of genuine quality and manual film speed from 6 to 6400.
Control, which is unusual in something this small. Manual film speed, exposure compensation to plus or minus 4 EV, spot metering, and manual focus in 22 preset steps.
The lens, which is the reason it has the reputation it has and why Minolta later made an L39-mount version of it.
Round out-of-focus highlights, if that is the sort of thing you care about, because there is no iris to make them polygonal, at least until Automatic Aperture Priority Compensation takes over.
Where it falls short: four apertures and nothing between them. A top speed of 1/350 unless Automatic Aperture Priority Compensation takes over and narrows the opening. No hot shoe and no cable release. No weather sealing claimed. One owner reports it locking up in humidity. And the two real ones — the light leak, which is common, and the fact that when the electronics or the gearbox go there is nobody to send it to and nothing to put in it.
Troubleshooting
A light leak in a corner of the frame, worse at small apertures
The TC-1's best-known complaint. Owners in the Flickr TC-1 group describe it in the lower right of a few frames per roll, and others report the lower left. 135compact.com found it absent at f/3.5, slight at f/5.6, visible at f/8 and worst at f/16.
One repairer (awayrepairs) traces it to a light-blocking sheet inside the lens barrel, between the barrier doors and the lens, which deteriorates with age. One owner suspects the aperture disc not seating correctly at f/8 and f/16, though that is not confirmed. Owners also report the foam around the film window and the back door perishing.
The barrel sheet is a technician's job, because the lens barrel has to come apart; that repairer replaces it with rubberised cloth cut to shape. The back-door foam is simpler, and one Japanese owner replaced it himself (jpskenn.net).
The aperture blades are sticky
There is no iris. The four apertures are fixed round holes in a disc. The leaf shutter's blades also act as the aperture at speeds above 1/350 (see Automatic Aperture Priority Compensation below). A fault described as sticky aperture blades is therefore in the disc mechanism or the shutter.
F-- in the data panel, or the shutter will not release
Minolta's manual says F-- appears, and the shutter locks, when the aperture lever is not at a full stop position. Move the lever firmly to one of the four stops first. If F-- persists, awayrepairs has traced the error to a damaged flex cable, which is a bench job.
It will not give me 1/750
That is how it is built. In normal aperture priority the top speed is 1/350. The viewfinder shows 1/500 and 1/750 only when Automatic Aperture Priority Compensation is working, and analog.cafe reports those speeds are only reached with f/3.5 or f/5.6 set.
The aperture is not doing what I set
Automatic Aperture Priority Compensation. Above EV 11.5, if you leave the aperture where it is, the camera narrows the shutter opening to prevent overexposure, and 500 blinks slowly in the finder. The shutter opening is not round, so Minolta's manual notes the round-aperture effect is lost at f/3.5 and f/5.6 when this happens. Working as intended.
Spot metering does not seem to meter a spot
It meters the spot circle, then holds that reading so you can recompose. In SP1 the reading holds while you keep the SPOT button pressed; in SP2 it holds until you press it again (Minolta manual, pages 33 and 34).
It stopped responding and it is humid here
One owner (analog.cafe) reports it locking up completely in humidity and recovering after a few hours somewhere warm and dry. Let it dry out before concluding anything.
Which cell it takes
The TC-1 runs on one CR123A, also sold as DL123A — a current 3 V lithium size, so no adapter or substitute is needed. Minolta rates a cell at about 13 rolls of 24 exposures with the flash used for half of them. Check that the battery door is fully closed before you suspect the cell.
My infrared film came back fogged
analog.cafe advises against infrared film in the TC-1 because the camera's internal sensor emissions may fog it. That is not a light leak.
What goes wrong, and what fixes it
The light leak
One of the commonest faults, according to the repairer awayrepairs, with the aperture-dependent pattern described above. That repairer traces it to a perished light-blocking sheet inside the lens barrel. Perished foam at the film window and back door is also reported, and one owner suspects aperture disc misalignment, though that is not confirmed. The barrel sheet needs a technician; the barrel has to come open.
Flex cable failure
awayrepairs has replaced broken selector and shutter flex cables in TC-1s, in one case after an F-- error that two earlier repairers could not clear. Specialist only, and there are no factory parts: that repairer had a replacement flex made from scratch, and used donor and lathe-made parts for other pieces.
Gearbox and lens-drive damage
awayrepairs calls it a design weakness: the motor keeps driving the gears past the encoder's end position, with no protection if debris gets in. The lens's axial position also has to be set exactly or infinity focus is lost on reassembly. That repairer at first refused one such job because of the difficulty and the risk of spending a lot of time without a result.
Humidity lock-up
One owner reports it locking up in humidity and recovering after a few hours in a warm, dry room. Not necessarily permanent.
Light seals
The TC-1 uses foam around the back door and the film window, and it perishes. Two posts on jpskenn.net describe one owner replacing perished foam at the film window and, later, shrunken foam at the back door himself. The separate light-blocking sheet inside the lens barrel is a specialist job.
The parts situation, stated plainly
Minolta merged with Konica in 2003, and Konica Minolta left the camera business in 2006. Sony took over the SLR line and SLR service. analog.cafe notes there are no spare parts and that repair knowledge is scarce, and the repairs described above rely on donor bodies and hand-made parts. Treat any TC-1 as an unsupported camera and price it that way.
Every one of these we list has been through the checks on this page first, and what we found is written on the listing.
Written once and kept up to date. It applies to every example of this model, not only to the one in the photograph. The facts were last checked on 23 September 2026, against the maker’s own published figures where they exist; where sources disagree, the page says so.
More like this: 35mm film cameras, or every model we have written up.
Specification
Lens — G-Rokkor 28mm f/3.5, 5 elements in 5 groups, two elements carrying 3 aspheric surfaces. An L39-mount version with a nine-blade iris was later made in a run of 2,000
Aperture — no iris. A rotating disc of fixed circular holes, selected by a lever. Four values only: f/3.5, f/5.6, f/8, f/16. Nothing in between
Automatic Aperture Priority Compensation — above EV 11.5, at speeds faster than 1/350, the shutter blades make the opening smaller than the aperture set, and 500 blinks slowly in the finder. The shutter opening is not round. This is by design
Shutter — electronic programmed leaf. Minolta's specification sheet gives 4 s to 1/750; the manual's viewfinder table and Wikipedia give 8 s to 1/750. The top speed in normal aperture priority is 1/350; 1/500 and 1/750 come only under Automatic Aperture Priority Compensation, and the manual's metering range ends at an effective f/13.5 at 1/750. No bulb setting is listed
Film speed — DX 25–3200, with manual override ISO 6–6400 in third stops
Metering — two-segment centre-weighted, and spot. Centre-weighted EV 1.5–17, spot EV 2.5–17. Exposure compensation plus or minus 4 EV
Focus — external passive autofocus with an illuminator LED, 455 steps. Manual focus in 22 preset distances, 0.45 m to 99 m, which the manual treats as infinity
Viewfinder — real image, 0.4x magnification, 85 per cent field at 3 m, dioptre adjustment minus 2.5 to plus 1. Distance scale along the bottom, focus indicator, and shutter-speed indicators at 500, 125, 30 and 8
Flash — built in and fixed, guide number 7 in metres at ISO 100. Auto, fill, cancel, night portrait, red-eye. No hot shoe and no cable release socket
Weather sealing — none claimed
Power — one CR123A or DL123A 3 V lithium cell. About 13 rolls of 24 with the flash used half the time
Weight — 185 g without battery
Dimensions — 99.0 x 59.0 x 29.5 mm
Here now
None here at the moment. They come through a few times a year, and this page stays up so you can find it when one does.