Angénieux Type Z2 50mm f/2.9 (Collapsible)

Angénieux Type Z2 50mm f/2.9 (Collapsible)

The Angénieux Type Z2 50mm f/2.9 is a French triplet normal lens documented in a collapsible, rangefinder-coupled Leica-standard M39 barrel. A specialist record identifies an original 1948 screw-mount example with three elements in three groups and links it to the Italian Gamma III. Leitz Auction independently documents a matching coupled Type Z2 on a Gamma II camera from 1950.

This profile represents that stable Gamma-associated screw-mount identity. It does not include every Type Z2 lens head later placed in an M39 helicoid. Leitz Auction has explicitly catalogued an MS Optical M39 conversion, demonstrating why an apparently compatible mount must be classified from its complete mechanical construction rather than from its thread alone.

Optical qualities

Rendering

The Type Z2 uses a three-element, three-group triplet. This arrangement places one element in each group and keeps the number of air-to-glass interfaces low. Simplicity does not mean that all aberrations disappear, and no factory performance curves for the Gamma-associated version have been located. The profile therefore avoids universal claims about sharpness, distortion or bokeh.

On 35mm film, 50mm provides a normal field suitable for general photography and portraits. The f/2.9 aperture is moderate rather than especially fast. Results depend heavily on coating condition, internal cleanliness and correct spacing.

At f/2.9

Maximum aperture gives less depth of field than the slower standard lenses commonly supplied with early screw-mount cameras. Accurate coupling remains useful near the recorded 1m limit. Focus should be tested at several distances, since a converted or mismatched barrel may reach infinity while failing to track correctly at close range.

The exact diaphragm blade count is not reliably documented for the original coupled collapsible barrel. Highlight shape should not be copied from Rectaflex, enlarging or converted examples. A hood can reduce oblique flare, but careful inspection for haze, separation and cleaning wear is more important.

Stopped down

Closing the aperture increases depth of field and normally improves consistency away from the centre. Middle apertures suit street and travel photography where focus must remain secure across a deeper scene. The smallest setting is left unspecified until a factory Gamma-version scale or catalogue establishes it for this exact barrel.

Handling and compatibility

The collapsible mount retracts for transport and must be fully extended and locked before use. Collapsible lenses require particular care on adapted digital bodies because the rear tube may approach internal components. Clearance should be verified without forcing the lens inward.

The original Gamma-associated version is rangefinder coupled and recorded with an approximately 1m near limit. Its M39 interface belongs to the Leica-compatible rangefinder class, but cam agreement should still be tested. An LTM-to-M adapter supplies a Leica M bayonet interface.

History

Development and Launch

Pierre Angénieux founded his company in Paris in 1935 and produced photographic and cinema optics before its later fame in retrofocus and zoom development. The Type Z2 belongs to the firm's early postwar normal-lens programme and was supplied in more than one camera application.

Flashback Camera documents an original collapsible Leica screw-mount Type Z2 manufactured in 1948 and considers it likely to have been made for the Italian Gamma III Leica-copy camera. Leitz Auction records a 1950 Gamma II with a matching rangefinder-coupled Type Z2. Together, those sources support both the early date and a repeatable Gamma-system M39 identity.

Production Evolution

Type Z2 optics were also installed in Rectaflex equipment and other non-rangefinder applications. The optical family name therefore does not establish flange distance, coupling or barrel origin. Each Leica-mounted example must be assessed as a complete mechanism.

The distinction is demonstrated by a Leitz Auction Type Z2 that was converted to M39 by MS Optical. That lens is legitimate as a conversion, but it is not evidence that its lens head left the Angénieux factory in the same mount. LeicaLensList keeps the original collapsible coupled version separate from later commercial conversions when their collector histories differ.

Special Editions/Variants

No commemorative edition is known. Gamma II and Gamma III associations, minor engraving changes and metre-scale details may indicate production context, but the available evidence does not prove separate optical generations. Rectaflex barrels and modern M39 conversions are mechanically different applications rather than special editions of the coupled collapsible profile.

Collector Notes

Confirm the Type Z2 and 50mm f/2.9 engravings, collapsible construction, Leica-standard thread and working rangefinder cam. Examine how the optical head is retained and look for adapter seams, newly machined helicoids or parts associated with a documented conversion. Seller use of “M39” alone is insufficient because the term also covers incompatible and non-original applications.

Test extension lock, infinity register, cam tracking and the approximate 1m close limit. Inspect the three elements for haze, fungus, separation, coating wear and cleaning marks. Individual serial numbers, Gamma camera pairings, auction grades and current prices belong to specific objects and are not generic specifications.