This is a very small German camera dating from the late 1930s. The design is as simple as possible and still have a working camera. The overall shape of the camera was maintained for some years but the details seem to have changed on a regular basis. The shutter release lever moved from behind the shutter to in front of the shutter to the base of the camera – I do not know the actual sequence of the changes, it could be the other way around. The body was sometimes die-cast in gun metal and sometimes in Bakelite.
This camera is very small. It measures 70 by 55 by 40 mm. This is only just big enough to take a roll of film. Actually, although the Interweb says that this camera takes 35 mm film, it is slightly too small and the Sida film specifically made for this camera cannot have been wider than 33 mm – it cost one shilling for a ten image roll in 1937. The camera is painted matt black (or, rather, was in the case of my camera as most of the paint has come off over the last 80-odd years). The front and back of the camera have panels which are textured in the metal to resemble leatherette but the texturing is in the casting. I should say, perhaps, that I have the die-cast metal version, not the Bakelite version.
This camera was advertised in the 1937 edition of the British Journal of Photography Almanac where the price was five shillings (25p in modern money).
The top of the camera is very simple (a recurring theme with this camera). On the right is a round raised portion which is the end of the film chamber inside. On the left is a round knob which is the film advance knob. This knob is on a ratchet and will only turn in one direction, and has an embossed arrow on the top to make clear which direction this is. The knob makes a very distinct grating noise when turned.
In the middle of the top is a very small viewfinder. The viewfinder is towards the front of the top and is impossible to use while wearing glasses. It is also difficult to use without glasses! The viewfinder image is correspondingly small and only vaguely squarish.
The back of the camera has a central red window. Although this camera uses miniature film, it uses a non-perforated film with a paper backing much like a small version of 120 film. When winding on the film, you need to look at the frame numbers through this red window. Above the red window is the name of the camera: “SIDA”. Across the red window is the legend “PATENT ang DRWZ”. The DRWZ bit is short for “Deutches Reichswarenzeichen” and the whole legend tells us that either the design of this camera is protected by a federal trademark or the name SIDA is protected – I am not clear as to which it is.
The bottom of the camera has a round raised portion at either end. Again, these are the ends of the internal film chambers. Between these is a rather small – 3mm diameter – hole for a tripod. Clearly, this cannot be used with a standard 1/4 inch Whitworth or UNC tripod which is about 6mm. Actually, I cannot imagine anyone wanting to use such a simple camera on a tripod.
The front of the camera is the most complex part. Not very complex but more complex than the rest of the camera. There is a 38 by 45 mm raised portion which protrudes 11mm from the rest of the camera. In the centre of this is the lens. Around the lens it says “Sida-Optik” and “1:8 = 35mm”. For such a simple and cheap camera, this has got to be a meniscus lens – just one piece of thin glass. The colour of the glass tells us that this lens is not coated – not that any lens is likely to be coated in 1938. The 1:8 tells us that the lens has a fixed aperture of ƒ/8. This is rather slow and must be coupled to a slow shutter speed to achieve a decent exposure of 1930s films. This small aperture will be necessary to achieve a good depth of field with the simple, focus-free lens. The focal length is 35 mm. The negatives produced by the camera have a diagonal of 35 mm so this lens is a “normal” lens for this film format.
On the left of the lens, on the surface of the camera, is the shutter release lever. This is a simple mild steel lever attached to the camera withy a brass screw. This lever fires the shutter when pressed down and fires the shutter again when pushed up.
On the right hand edge of the raised portion, towards the bottom, is a small screw threaded with a nut. If this is pulled out, the shutter is converted from a brief exposure to B. With this pulled out, the shutter release lever opens the shutter which remains open until the shutter release lever is pressed in the opposite direction. In the metal beside the raised portion, there is a moulded legend: “T←M”. “T” is clearly time and I am guessing that “M” is the German for moment.
The back of the camera is opened by pulling back on a lug on the left hand edge of the camera. There is no catch of any sort nor any hinge – the back comes away in one piece. Inside the back – which is painted matt black – there is the number 1946 scratched in the paint. Is this the year of manufacture, the year of purchase or a serial number? Your guess is as good as mine.
Inside the body of the camera, there is a chamber on the right for the new roll of film. At the top and bottom of the chamber are two grooves to locate the ends of the film spool but the film spool is not fixed in any way. There is a steel leaf spring to keep the spool from moving and to keep the film taut.
On the left is the chamber for the take-up spool. This spool latches at the top into the inside of the film advance knob, the bottom of the spool sits loosely in a groove as both ends of the film spool do.
In-between the two spool chambers is the film gate. This is 25 mm square. Above and below the film gate is a rebate to guide the film. In total – film gate plus two rebates – this measures 33 mm which is the maximum width of the film. The Interweb says that this camera uses 35mm film but that is not the case – Sida produced their own size of roll film.