KMZ Zorki 3

Zorki 3

The KMZ Zorki 3 is a Soviet 35mm coupled-rangefinder camera introduced in 1951. It was the first major redesign of the early Zorki line, replacing the compact Leica II-derived body with a larger cast construction, a removable rear section and a combined viewfinder and rangefinder.[1][3]

The camera uses an M39 screw lens mount and a horizontal-travel cloth focal-plane shutter. Its shutter offers speeds from 1 second to 1/1000 second, controlled by separate fast- and slow-speed selectors. The Zorki 3 has no self-timer or factory-installed flash synchronization.[1][3]

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History

Development and Launch

Development of the Zorki 3 grew from an earlier advanced rangefinder project initially called the Zorki 2. That experimental camera explored a combined finder, slow shutter speeds and a top speed of 1/1000 second, but it was unrelated to the simpler production Zorki 2 apart from the reused name.[1][4]

KMZ simplified and revised the concept before introducing the Zorki 3 in 1951. The new camera retained the combined finder and extended shutter-speed range while adopting a cast body and a removable rear and base section. These changes made film loading easier and distinguished the Zorki 3 from the bottom-loading Zorki 1 and Zorki 2.[1]

Production

The Zorki 3 entered serial production in 1951 and remained in production into the middle of the 1950s. KMZ records combine the Zorki 3 and Zorki 3M, listing 87,569 cameras for both models together between 1951 and 1956.[2]

This combined number should not be treated as the production total for the Zorki 3 alone. No reliable factory breakdown between the original two-dial Zorki 3 and the later single-dial Zorki 3M has been published.

Early production was limited, with only 106 combined Zorki 3-series cameras recorded in 1951. Output increased substantially during 1954 and 1955 as KMZ expanded production of the Zorki 3 and Zorki 3M designs.[2]

Shutter and Operation

The Zorki 3 uses two shutter-speed controls. The top selector controls B, 1/25, 1/50, 1/100, 1/250, 1/500 and 1/1000 second. A second dial on the front controls 1, 1/2, 1/5 and 1/10 second through a separate slow-speed mechanism.[1][3]

The 1/25-second position appears on both controls because it connects the main shutter mechanism with the slow-speed escapement. When a fast speed is selected, the front control must remain at 1/25. When a slow speed is selected, the top control must also be set to 1/25.[3]

The shutter should be cocked before either speed control is adjusted. Incorrectly positioning the two selectors can damage or disengage the timing mechanism.

Some cameras also have a Cyrillic Д setting on the slow-speed control. This functions as a time-exposure setting, keeping the shutter open without requiring the release button to remain continuously pressed.[3]

Viewfinder and Rangefinder

The Zorki 3 was the first production Zorki to combine the viewfinder and coupled rangefinder in a single eyepiece. Earlier models required the photographer to focus through one eyepiece and compose through another.[1][4]

The finder has approximately 1.15× magnification and a physical rangefinder base of about 38 mm. A diopter-adjustment control allows the eyepiece to be adapted for the photographer’s eyesight.[3]

The fixed view corresponds approximately to a 50 mm lens and has no projected framelines or automatic parallax correction. Wider or longer lenses require an external accessory finder fitted to the cold shoe.

Relationship to the Zorki 3M and 3S

The Zorki 3M replaced the separate fast- and slow-speed controls with a single shutter-speed selector on the top plate. Although the two cameras share a similar cast body, finder and removable rear section, the redesigned shutter makes the Zorki 3M a separate model.[1]

The Zorki 3S was developed from the Zorki 3M rather than directly from the original Zorki 3. It retained the single-dial shutter and added factory flash synchronization, requiring a taller and wider upper housing.

For listing identification, a camera with a separate slow-speed dial on the front is a Zorki 3. A camera with one shutter-speed selector and no factory flash terminal is generally a Zorki 3M. A synchronized camera with the larger upper housing is a Zorki 3S.

Dimensions and Weight

A practical body specification gives dimensions of approximately 146 mm wide, 84 mm high and 35 mm deep without a mounted lens.[5]

A measured body without a lens weighs approximately 550 g.[3] Minor variation should be expected depending on production configuration, internal parts, removable back and whether a take-up spool remains installed.

Published figures around 660 to 680 g generally include a Jupiter-8 or another standard lens and should not be treated as body-only weight.

Lens Kits

The Jupiter-8 50 mm f/2 is the standard lens most commonly associated with the Zorki 3. Early cameras may be found with earlier ZK or ZK-Zorki versions of the same basic 50 mm f/2 design.[3][4]

The Jupiter-17 50 mm f/2 is also listed as a possible standard lens, although surviving examples are much less common.

The supplied lens should be stored as listing metadata rather than included in the main camera name. A Zorki 3 fitted with an Industar-22, Jupiter-3 or another compatible M39 rangefinder lens remains a Zorki 3.

Combined Variants

The Zorki 3 underwent several production changes that should remain combined on one main camera page.[4]

Early cameras can have a particularly large front finder window, broad decorative rims and a locking mechanism on the slow-speed control. Later examples received revised finder-window shapes, different screw positions and simplified trim.

The serial-number position also changed. Depending on the production period, the number can appear on the upper housing, rear plate or removable back.

Some cameras were supplied with an enlarged removable control fitted over the standard slow-speed dial. Early versions of this accessory used a ratchet mechanism, while later examples omitted it.[1][4]

Other documented changes include different tripod fittings, the presence or absence of a folding balance foot, changes to the shutter-speed index and variations in control-knob diameter.

These differences are suitable for exact_variant, production_period, serial_location, finder_window_style, slow_speed_lock, enlarged_slow_speed_dial, tripod_fitting and engraving metadata.

Serial Number Information

Early Zorki 3 cameras used sequential factory numbering. Collector-documented examples include serial numbers 00012, 00031, 01237, 05238 and 05934.[4]

KMZ introduced year-coded serial numbering during 1954. Later Zorki 3 examples can therefore have numbers beginning with 54 or 55, although the length and arrangement are not completely consistent during the transition.[1][4]

Documented late examples include serial numbers 5500008, 5505021 and 5505050.[4] These are useful reference points but should not be treated as confirmed factory start or end numbers.

Because numbering overlapped with related KMZ production and changed during the model’s life, no reliable continuous model-exclusive serial range should be invented.

Identification

A standard Zorki 3 has a large combined finder window, one rear eyepiece, diopter adjustment, permanent strap lugs and a removable rear and base section.

Its defining feature is the separate slow-speed selector on the front of the body. The camera has no self-timer and no factory flash connection.

The model name is normally marked as Зоркий-3. Export markings and differences in engraving position should be recorded as variant metadata.

Collector Notes

The original Zorki 3 is less common than the later Zorki 3M, Zorki 3S and Zorki 4. Its two-control shutter also requires more careful operation and servicing.

The slow speeds should be tested separately from the faster shutter settings. A camera may operate correctly from 1/25 to 1/1000 second while the slow-speed escapement remains seized or inaccurate.

Collectors should also check the cloth curtains for pinholes and uneven travel, the finder for haze or separation, and the rangefinder for horizontal and vertical misalignment.

Removable backs, shutter-speed controls and tripod fittings can be exchanged between cameras. Identification should therefore use several features together rather than relying only on the serial number.

For price tracking, useful metadata includes exact_variant, production_period, serial_location, finder_window_style, slow_speed_lock, enlarged_slow_speed_dial, tripod_fitting, engraving, export_version, included_lens, rangefinder_condition, slow_speed_condition, shutter_condition, accessories, case_included and body_only_or_kit.

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Sources

• [1] ZENITcamera Archive. The Zorki Camera Line. https://www.zenitcamera.com/archive/zorki/index.html
• [2] ZENITcamera. KMZ Camera Production Data. https://www.zenitcamera.com/catalog/cameraproduction.html
• [3] Fototekhnika SSSR. Zorki-3 Camera. https://fotoussr.ru/cameras/zorki-3/
• [4] SovietCams Archive, hosted by Mike Eckman. Zorki-3 Classification. https://www.mikeeckman.com/sovietcams/index32b3.html
• [5] Pacific Rim Camera Reference Library. Zorki-3 Specifications. https://pafas.tripod.com/cameras/kmz/k100.html