Leica If Black Dial - Antique and Vintage Cameras

Leica If


Black Dial

E. Leitz G.M.B.H.


West Germany

Image of Leica If Black Dial

f3.5, 5 cm Elmar, iris diaphragm to f22. Depth-of-field scale. Screw mount. Serial no. 1048143 (1952).

Focal-plane, speeds 1/30 - 1/500, B. (1/30, 1/40, 1/60, 1/100, 1/200, 1/500). Speeds are varied by delaying the second blind. Flash synchronisation with variable delay scaled 0 - 20.

Vulcanite covered metal body.

36, 24 x 36 mm exposures on 35 mm film held in standard cassette.

Helical, scale to 3.5 feet.

Auto-stop on film advance coupled to shutter. Film advance tensions shutter.
Exposure counter. Film speed reminder dial scaled: 6 - 125 ASA, 10 - 23 DIN.

Serial Number:
561043 (1951) .


  • Lens cap. 5 cm bright line view-finder in case.
  • Focoslide unit.
  • 5x vertical magnifier. Version with longer body and diamond knurling.
  • 30x finder.
  • Projection Head, this fits onto the Focoslide in place of the finder to illuminate the field of view.
  • Helical focusing tube to use 5 cm Elmar with Focoslide, gives a focus range of 3 ½' - 9".
  • Iris Setting device - VALOO, scaled f3.5 - f16.
  • Tripod Head.
  • "Focosing Slide" - pamphlet c. 1957. This shows the new model of focuslide for the M range (OOTGU) but the older type screw model (OOZAB).

The serial number shows this example to be from the last batch of Ic cameras but it has been finished as a If. The first If batch followed directly after the last Ic batch.

This was a simple device providing a focusing screen which could quickly be replaced by the camera. Different accessories could be mounted on the front of the device such as bellows, extension tubes and focusing mounts. The common arrangement was to use extension tubes, a helical focusing mount for the lens and an aperture setting device to fit onto the front of the lens. Magnifiers could be attached to the focusing screen, these were the same as used on the rotating stage and Visoflex I.

The device was developed by Leitz New York. The first Wetzlar model (OOZAB) appeared in 1938 and was re-introduced following the war. The camera was clamped in position by a spring mounted bar, on early versions the bar had a single flat plate to rest against the camera later the familiar H shaped device was used. The standard Leica lens thread was used on the front of the device. This version could be used in conjunction with the Bellows I.

In 1957/58 a second version was introduced by Wetzlar this was of improved construction with rounded edges, the accessory thread was changed to 51 mm. The device was available for screw mount cameras (OOBAZ) and bayonet mount (OOTGU).

The Valoo is a combined iris setting device and lens hood, it was intended for use with the focoslide unit where the lens is deeply recessed into the focusing mount making the iris difficult to operate.

Code Names:
OEINO - camera including SBOOI - view-finder. OOZAB - Focoslide unit. LVFOO - 5x magnifier. LWHOO - 30x finder. OUTSO - Projection Head. ZOOXY - Helical focusing tube. VALOO - iris setting device. KGOON - Tripod Head.


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