The Pentax Spotmatic F (SPF) added full-aperture metering to all of the features found in the Spotmatic II. Full aperture metering required the newer Super-Multi-Coated (S-M-C) Takumar lenses with an aperture-position linkage to the camera. The camera retained backwards compatiblily with all earlier Takumar lenses.
There were a number of 'Motor Drive' editions produced by Pentax beginning in 1969 with the original Spotmatic and ending with the ES II in 1975.
The SPF Motor Drive System was offered in 2 different packages. The 'Set 36' consisted of the Spotmatic F camera which had been modified to accept the motor drive system, a SMC Takumar 50/1.4, the motor drive unit, the battery grip and a battery loader for AA batteries. The 'Set 250' consisted of the Set 36, plus a bulk film magazine capable of accepting 250 exposure bulk film.
| Asahi Pentax Spotmatic F Motor Drive |
Year introduced
1973 | Year discontinued
1976 | Mount
M42 | Automatic aperture stop down
Yes |
Metering
Open aperture, centerweight | Meter range
EV 3 to 18 | ISO range
20 to 3200 | DX ISO range
No DX coding |
Exposure modes
Manual, B | Exposure compensation
Not applicable | Exposure memory lock
No | Shutter speeds (auto)
Not applicable |
Shutter speeds (manual)
B, 1 - 1/1000s | Shutter speeds (mechanical)
B, 1 - 1/1000s | Self timer
Yes, 6 to 12s | Mirror lock-up
No |
Auto bracketing
Not applicable | Multiple exposures
Yes | Winder
Ratchet type rapid wind lever. 10° pre-advance and 160° advance angle. Optional external motor drive 2.5 - 3 fps | Flash hot shoe
Yes |
Built-in flash
No | TTL/P-TTL flash
No | Flash sync speed
FP and X terminals - 1/60s | Flash exposure comp
Not applicable |
Viewfinder
0.88x (with 50mm lens) | Viewfinder type
Pentaprism finder with Fresnel lens + microprism | Diopter correction
No | Exchangeable screen
No |
Depth of field preview
Yes | Image size
24 x 36 mm | Battery
1.35V PX-625 | Battery grip/pack
Yes, AA and Rechargable for the motor drive |
Size (W x H x D)
143 x 93 x 49mm camera
143 x 274 x 95mm Set 36
289 x 274 x 95 mm Set 250 | Weight
642 g camera
1.75 kg Set 36
2.93 kg Set 250 |
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Last edited by Ole; 11-08-2010 at 06:59 PM.
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