Glass Bodies a variant-level encyclopedia of vintage lenses and cameras by iwillpat

Schneider Alpa-Curtagon 35mm f/2.8

Schneider-Kreuznach · Alpa · 1960

Also known as: Schneider Alpa-Curtagon 35mm f/2.8 · Alpa Curtagon 2.8/35 · Schneider-Kreuznach Alpa-Curtagon 1:2.8/35 · Curtagon 35mm Alpa

Variants & identification

Variant Mount Years Serial ranges Production
Alpa-Curtagon 35mm f/2.8 [I] Alpa 1960 — Unpublished
Alpa-Curtagon 35mm f/2.8 [II] Alpa 1965 — Unpublished
  1. Two groupings of six elements under one name (The Lens DB). The second is arguably a new design; it is carried as a variant with that said.
  2. Dates are inferred: The Lens DB gives none for either type.
  3. The PA-Curtagon 35mm f/4 is a different lens — a shift lens — with its own page.
How to tell them apart (expand)
  • ALPA-CURTAGON 1:2.8/35 — Schneider's retrofocus wide-angle in the Alpa bayonet, the successor to Schacht's Alpagon

Specifications

Formula
Retrofocus: 6 elements in 5 groups [I]; 6 elements in 6 groups [II]
Construction
6 elements / 5 groups
Aperture range
f/2.8
Min. focus
0.35 m
Weight
220 g
Years manufactured
1960
Country
Germany

What reviewers say

No reviews aggregated yet — this family is still in the research queue. Written one? We'd love to index it.

History

The Alpa-Curtagon 35mm f/2.8 is Schneider’s retrofocus wide-angle in the Alpa bayonet, in two forms that The Lens DB separates: a first with six elements in five groups focusing to 35 centimetres, and a second with the same six elements in six groups focusing to 30. Both weigh 220 grams and take the 52 mm clamp-on hood. By the strict rule the re-grouped second lens could be its own page; it is here as Schneider’s own revision of one lens, which is how it was sold. The Curtagon succeeded Schacht’s Alpagon 35mm f/3.5 as the Alpa’s 35 around 1960; the years given for both types are this entry’s inference. Production is unpublished and no review has been found.

This history is AI-written, from the sources listed at the foot of the page. Where the record is silent it says so rather than filling the gap — but no human wrote these sentences.

Example photos

Sample photo wanted — shot with a Schneider Alpa-Curtagon 35mm f/2.8? We'd love to feature it (with credit).

Live listings

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Listings updated 2026-09-11. Links go to the shop or marketplace that carries the item.

Related: Schacht Alpagon 35mm f/3.5 · Schneider Alpa PA-Curtagon 35mm f/4 · Schneider Alpa-Xenon 50mm f/1.9

Sources (2)

Every page here is assembled from public sources, and the gaps are real ones. If you own this lens, know a serial number I'm missing, or can see where I have it wrong, tell me — corrections, serials and sample photos are all worth having.