Asahi Pentax S1a
| Pentax S1a | |
|
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| Type: | 35 mm single lens reflex camera |
| Production period: | 1962-1968 |
| Lens connection : | M 42 |
| Film format : | 35 mm (small picture) |
| Recording format : | 24 × 36 mm |
| Viewfinder : | Pentaprism |
| Viewfinder field: | 93% |
| Enlargement: | 0.82 times |
| Operating modes: | M, B, X |
| Film transport: | Quick transport lever |
| Closure : | horizontally running cloth slot closure |
| Shutter speed : | 1 / 500s (1 / 1000s) to 1s, B. |
| Control: | mechanically |
| Flash control: | via 2 PC sockets on the front |
| Lightning connection : | PC sync socket |
| Synchronization : | 1 / 50s |
| Casing: | Metal case |
| Dimensions: | 145 mm × 92 mm × 47.5 mm |
| Weight: | 600 g |
The Asahi Pentax S1a is a 35mm camera from Asahi Optical KK . In 1962 Asahi Optical KK brought out the successor to the Pentax S1 with the Pentax S1a . It was delivered with the Super Takumar 55mm f / 2. The camera was produced until 1968.
General
The Asahi Pentax S1a is a single-lens single -lens reflex camera from the Japanese company Asahi Optical KK for 135 film . On the American continent, it was sold under the Honeywell H1a brand. It has no built-in light meter and no time release. It has a semi-automatically coupled aperture control.
Data and equipment features
Controls
On the top of the camera, on the right shoulder, there is the shutter speed dial with times from 1 s to 1/500 s (the 1/1000 s is not marked but above the 1/500 s), a bulb for long exposures and one with an x marked intermediate position as flash sync time with 1/50 s. At the front left there is a signal window to indicate that the camera is ready when the camera is cocked. To the right of the time setting wheel is the film fast transport lever with built-in frame counter. The trigger is located between the time wheel and the transport lever.
On the left shoulder there is the film rewind crank with an ISO dial as a marker for the sensitivity of the film. There are 2 PC flash sync sockets on the left side of the mirror box. The upper one is for FP synchronization, the lower one for x synchronization. The backwash button and the tripod connection socket with 1/4 ″ BSW thread are located on the underside .
Clasp
The lock is a cloth slit lock that runs horizontally. The shutter is mechanically controlled and allows shutter speeds from 1/1000 s to 1 s, 1/50 s as flash sync time and bulb.
Viewfinder
The Pentax S1a has a penta prism finder with silver coating. The focusing screen is equipped with a micro prism ring . The viewfinder coverage is 93% of the film format and offers a magnification of 0.82 × with a 50mm lens in the infinity setting.
trigger
The camera shutter release is a mechanical button with an embedded thread. The thread is used to connect a cable release or mechanical time release.
equipment
Asahi Pentax has various original accessories such as slip-on accessory shoes in 2 variants, "Pentax Meter" clip-on light meters in 2 variants, angle finder, clip-on finder magnifier, eye correction lenses.
swell
- Herbert Keppler: The Asahi Pentax Book. DSB Verlag The beautiful books, Dr Wolf Strache, Stuttgart 1974, ISBN 3-7956 0124-X .
- Schmicki's Pentax and photo pages (German), information on Pentax cameras in German, some with accessible manuals
- PENTAXFORUMS, Friendly Pentax Camera Forum (English), photo forum with comprehensive lens and camera reviews
