Some data on this page is not fully verified yet (source confidence: medium). Fields marked verify still need a check against the manufacturer.
Specifications
| Brand | Asahi Pentax (vintage) |
|---|---|
| Category | vintage spherical |
| Squeeze factor | 1x |
| Format / coverage | Full frame |
| Focal length(s) | 50 mm |
| Maximum aperture | f/1.4 |
| Mounts | M42 |
| Flare | n/a |
| Launch price (USD) | n/a |
| Official price, CSV snapshot 2 Nov 2026 | used market |
Notes: Warm (thoriated) glass; popular cinematic vintage
Look and character
This is a spherical (non-anamorphic) lens, so there is no squeeze. It is listed because people often use it as a cinematic lens or as a taking lens for anamorphic adapters.
Flare: n/a. This comes from manufacturer information; we have not shot with this lens ourselves.
Work out the numbers for your camera with the squeeze calculator →
Price history
No automated price tracking for this lens yet. It sells used only; used-market tracking (eBay, MPB, KEH) is planned.