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09-21-2010, 10:33 PM   #1
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
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Posts: 4,190
Pentax S1a (H1a)

The S1a was released in 1962, and was intended to be a budget model of the SV. The S1a was nearly identical to the SV, lacking the timer and being equipped with a slower 55/2 Super Takumar lens. The S1a was 'marketed' as being limited to 1/500s, and does not list the 1/1000 marking for the shutter speed. The camera can however be set to the unmarked area and will function at 1/1000s. The camera could be fitted with a light meter, which coupled to the shutter speed dial.

Asahi Pentax S1a
Also marketed as
Honeywell Pentax H1a
Year introduced
Year discontinued
Automatic aperture stop down
No light meter
Exposure modes
Manual, B
Shutter speeds (auto)
Not applicable
Shutter speeds (manual)
T, B, 1 - 1/500s, X
Shutter speeds (mechanical)
T, B, 1 - 1/500s, X
Self timer
Mirror lock-up
Auto bracketing
Not applicable
Multiple exposures
Ratchet type rapid wind lever
Flash hot shoe
Built-in flash
TTL/P-TTL flash
Flash sync speed
FP and X terminals - 1/50s
Flash exposure comp
Not applicable
Viewfinder type
Pentaprism finder with Fresnel lens + microprism
Diopter correction
Exchangeable screen
Depth of field preview
Through switch on lens where available
Image size
24 x 36 mm
Size (W x H x D)
140 x 92 x 50mm
The S1a came in an early and a late type. The latter has an orange 'R' on the rewind knob which tells that the camera can use the 50mm f/1.4 lens (which protudes farther into the camera than all other 50mm lenses)

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Last edited by Ole; 10-10-2010 at 04:19 PM.
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