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In 1966 a very small mechanical 35 mm cameras called Rollei 35 was launched. At the time it was the smallest ‘full frame’ 35 mm camera in the world. In those days the ‘full frame’ had to be distinguished from the Olympus ‘half frame’. It still is the smallest all metal full frame 35 mm camera. Even today this camera is a desirable film based camera for urban use. Unfortunately the Rollei 35 is not built by the present day DW company. You can download the manual from the Downlaods page of this site. Basic operations in video can be found at Rollei 35 Basic Operations.


The camera was designed by Heinz Waaske. Mr. Waaske invented this small camera while working at Leitz Wezlar. Mr. Ernst Leitz was not interested. Mr. Waaske moved on to another camera manufacturer but they were about to retreat from camera sales. He found a new job with Rollei and shortly after presented his prototype to Rollei management. It was just what they were waiting for and his design was rushed into development. After introduction at the 1966 Photokina fair it was a great success. It is one of my favourite film cameras for urban use.

The first batches of Rollei 35 cameras were made in Germany and had Tessar lenses made by Carl Zeiss. The camera are built using traditional Euripean style slotted screws. These German Rollei 35's are most sought after. Soon production was moved to Singapore, assembling German parts at first. Later on locally made parts were also used. The factory also opened a lens plant in Singapore and made the Tessars under licence. These Tessars are labeled ‘Made by Rollei’. They do not bare the Zeiss name. In Singapore Phillips screws with cross-shaped slots were used.

Main Points to watch

The Rollei 35 was well designed and well built. Caused by its tiny size the parts are tiny too and even this well built camera can suffer from abuse. In particular the lens barrel may suffer from abuse.

Pulling the Lens Barrel out

The lens barrel release button (LBRB) is the small button next to the shutter release button. When the barrel is “in” you can carefully pull it out just like that. It won't hurt pushing the LBRB but it is not necessary. After pulling the barrel completely out, gently turn it clockwise until it is locked. It is just a short throw. It is clockwise when looking at the front of the camera.

Pushing the Lens Barrel in

Pushing it back is more complex. First of all: The film has to be advanced and the shutter cocked. This is vital and this is also the point where an unfamiliar user could start damaging things. When the the film is not advanced (and thus the shutter is un-cocked) the barrel cannot be moved. To make sure, you can carefully pull the film advance lever. The lever will be locked after the film was advanced (and the shutter cocked). Do not force it. On the other hand if the lever moves for more than a few mm, carefully turn it all the way and let it move back afterwards. Now the shutter is cocked and the film is advanced.

Push and hold the LBRB to unlock the barrel and carefully turn the lens barrel counter-clockwise untill it stops. Now the lens barrel can be pushed in gently. If the barrel cannot be turned counter-clockwise easily, make sure the film is advanced and the LBRB is pushed. This is the point where the barrel locks can be ruined by brute force. When buying a Rollei 35 carefully check the lens barrel and its movements.

The top cover

Check the top cover for dents. It is made of thin metal and rather vulnerable. For many years spare tops were available and you may find a Rollei 35 without serial number, a sign that the top cover was replaced. I own such a camera. There is nothing wrong with it.

The Light-meter

The Cadmium Sulphide light-meter and the PX625 Mercury button cell

The Cadmium Sulphide light-meter of the Rollei 35 was designed for the PX625 Mercury cell. It is not available anymore for environmental reasons. It was “replaced” by the PX625A (A for alkaline) cell. It is not an acceptable replacement for the Mercury cell. First of all the 625A supplies 1.5 Volt instead of 1.35 Volt for the Mercury cell. The Rollei 35 has an electrical circuit that cannot compensate for the difference. It means the lightmeter will have to be re-calibrated. A more serious problem is the discharge curve. Mercury cells keep a steady voltage of 1.35 V until they die. The voltage of Alkaline cells drifts down from 1.55 V to less than 1.35 V. There is no way the light meter can be properly re-calibrated for this drifting voltage.

There are two ways to proceed: One way is to stay with 1.35 V, at least for the time being. This is the way to go when your Rollei 35 has no obvious need for a service. No re-calibration of the light-meter is needed for the following solutions.

The WeinCell

The WeinCell has a discharge curve similar to a Mercury cell. The only draw-back is it will last only about six months. Your old Mercury cell would have lasted six years.

The CRISS MR-9 or H-B Mercuru Battery Adapter

The CRIS MR-9 Mercury Battery adaptor with a Silver Oxide 386 cell replace a PX625 cell. A micro-circuit reduces the 1.55 V to 1.35V. Another option is the H-B Mercury Battery adaptor. It replaces the screw-in lid of the battery compartment. It contains electronic circuitry to reduce the voltage of a standard Silver Oxide 377 watch cell to 1.35V. You have to purchase either the MR-9 or the H-B. Off course both devices are reusable and have to be purchased only once.

The second way is to change to 1.55 V. You can use this option when the camera needs a service shortly. At the same time you can have the light-meter re-calibrated.

The Excell Battery S625PX

The ‘Excell Battery S625PX’ Silver Oxide cell. It has a voltage of 1.55 Volt, so the light-meter has to be re-calibrated, but the discharge curve is similar to a Mercury cell. The availability of the S625PX Silver Oxide cells is difficult again. A number of suppliers, including well-known photography shops, list it as discontinued. Be aware of ‘alternative’ offerings that are the same in size only but not in chemistry.

The limitation to this 1.55 V solution is that there are only very few people in the world who may lay there hands on my Rollei 35 for service. On the Repair Shops page of this site I have listed a choice of qualified technicians. Look for the ones who work on the Rollei 35 or on all classic or tradional Rolleiflex models.