Asahi Tele-photo Takumar 500mm F/5
Super telephoto prime lens • Film era • Discontinued
- Announced:
- · 1953
- Production status:
- ● Discontinued
- Country of design:
- · Japan
- Original name:
- · Asahi-Kogaku Tele-photo Takumar 1:5 f=500mm
- Class:
- · Slow full-frame super telephoto prime lens
- · Professional model
- System:
- · Asahiflex M37 (1952)
Model history (5)
| ■Asahi Tele-photo Takumar 500mm F/5 | M | 2 - 1 | 11.00m | -- | 1953 ● | |
| ■Asahi Takumar 500mm F/5 [326, 43260] | M | 2 - 1 | 11.00m | -- | 1957 ● | |
| ■Asahi Takumar 500mm F/4.5 [366, 43660] | M | 4 - 4 | 10.00m | -- | 1966 ● | |
| ■Asahi Super-Multi-Coated Takumar 500mm F/4.5 [43661] | M | 4 - 4 | 10.00m | -- | 1971 ● | |
| ■smc Pentax 500mm F/4.5 | M | 4 - 4 | 10.00m | -- | 1975 ● | |
Specification
| Optical design: | |
| 35mm full frame | |
| 500mm | |
| F/5 | |
| 2 elements in 1 group (Doublet) | |
| M37 [45.5mm] | |
| 5° (35mm full frame) | |
| Diaphragm mechanism: | |
Diaphragm type: | Manual |
Aperture control: | Aperture ring |
| <No data> | |
| Focusing: | |
| 11m | |
| <No data> | |
Focusing modes: | Manual focus only |
Manual focus control: | Rack-and-pinion mechanism |
| Physical characteristics: | |
| 2850g | |
| ⌀105×500mm | |
| Accessories: | |
| Removable front filters are not accepted | |
| Built-in telescopic round | |
| Not available |
Sources of data
- The Ultimate Asahi Pentax Screw Mount Guide 1952-1977 book by Gerjan van Oosten (1999).
- Asahi Flex model II instruction manual.
- How to use Asahiflex model II instruction manual.
Manufacturer description #1
Comparatively light, small and portable for its long focal length of 500mm. Capable of taking interesting and unique pictures of long distance, snaps, sceneries, stage scenes, etc., that other lenses may not be able to represent.
Manufacturer description #2
Extremely long focal length lens for bringing far away subjects up close for big image on film. Excellent for sports shots. Socket for using on tripod. Rack and pinion focusing.
From the editor
Putting the lens on the camera requires to screw the rear tube on the camera first. After this the lens is fitted to the tube by a 4-claw bayonet with a fixing ring. The rear tube also contains a ⌀46mm filter mount.