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 | | |
Last edited by Ole; 11-08-2010 at 06:59 PM.