Old Delft Alfinon 50mm f/2.8
Old Delft · Alpa · 1949 · Tessar type, 4 elements in 3 groups
Also known as: Old Delft Alfinon 50mm f/2.8 · Oude Delft Alfinon 5cm f2.8 · Alfinon 1:2.8 f=5cm · Alfinon 2.8/50 Alpa
Variants & identification
| Variant | Mount | Years | Serial ranges | Production |
|---|---|---|---|---|
| Alfinon 50mm f/2.8, preset | Alpa | 1949 | — | 926 (a dealer's count via search; unconfirmed) |
- Construction and weight are The Lens DB's; the 926 is a dealer's figure carried second-hand.
How to tell them apart
- OLD DELFT ALFINON 1:2.8 f=5cm on a chrome barrel; the Al- prefix is Old Delft's Alpa naming, as Alfinar and Alefar
- Alfinon 50mm f/2.8, preset: The Dutch standard lens for the Alpa: four elements in three groups, preset diaphragm with ten blades, 105 g, focus to 0.5 m, 42 mm clamp-on hood (The Lens DB, which dates the Alnea-era lens 1952). A c.1949 example sold with a Prisma Reflex at the 30th Westlicht auction (camera-wiki).
Specifications
- Formula
- Tessar type, 4 elements in 3 groups
- Construction
- 4 elements / 3 groups
- Aperture range
- f/2.8
- Min. focus
- 0.5 m
- Weight
- 105 g
- Years manufactured
- 1949–1956
- Country
- Netherlands
What reviewers say
No reviews aggregated yet — this family is still in the research queue. Written one? We'd love to index it.
History
De Oude Delft, the Dutch maker of aerial, medical and cine optics, supplied Pignons with a family of lenses whose names all begin Al- for Alpa: the Alfinon 50mm f/2.8 standard lens, the Alfinar wide-angles, the Algular and Alefar telephotos. The Alfinon is a modest preset f/2.8 that focused to about 50 centimetres and served as the affordable standard from about 1949 — a c.1949 example was sold with a Prisma Reflex at Westlicht — into the Alnea era, when Schneider’s Xenon took that role. A dealer’s count puts the run at 926; no document confirms it, and no formula or element count has been found. No review exists.
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 Old Delft Alfinon 50mm f/2.8? We'd love to feature it (with credit).
Live listings
Asking price, USD: a median of $800 across 3 fixed-price listings on 2026-09-06 (middle half $700–$800). First day tracked.
Asking prices from the listings scanned, not sales; junk-flagged rows and auction lots excluded; other currencies are not converted.
- [N. MINT] ALPA REFLEX Mod.6c Film Camera OLD DELFT ALFINON 50mm F/2.8 Lens JAPAN
- OLD DELFT FOR ALPA 50MM F2.8 ALFINON LENS REFLEX MOUNT #5681
- RARE Mint Condition Alpa Old Delft Alfinon 5cm f/2.8 Lens Fully CLAd
- [N. NEUWERTIG] ALPA REFLEX Mod.6c Filmkamera OLD DELFT ALFINON 50mm F/2.8...
- Old Delft Alfinon 5cm f/2.8 Alpa Mount
- [N. MINT] ALPA REFLEX Mod.6c Film Camera OLD DELFT ALFINON 50mm F/2.8 Lens JAPAN
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Listings updated 2026-09-05. Links go to the shop or marketplace that carries the item.