Forgot Password
Pentax Camera Forums Home
 

Closed Thread
Show Printable Version Search this Thread
09-15-2010, 08:36 PM   #1
Administrator
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,783
Pentax Electro Spotmatic

The Pentax Electro Spotmatic was the world's first 35mm SLR with a fully electronic shutter system. It was released in 1971 and only sold in Japan. The circuitry was under constant revision during the year of its release which arguably made the camera a prototype, which was evident due to reliability issues. When the shutter speed was set on automatic, it used a 'stepless' shutter. The Pentax memory device computes and delivers an infinite number of exposures between 8 and 1/1000 second - automatically. If 1/555 second will give you the right exposure, that is what will be programmed.

It utilizes the Super-Multi-Coated Takumar and SMC lenses for open aperture metering. The viewfinder remains bright under all conditions, making focusing easy. In the event that earlier lenses without the open-aperture metering coupling, the Electro Spotmatic, ES, ES II and Spotmatic F provide stop-down metering with the familiar switch near the lens mount. In any case, the meter is activated by partially depressing the shutter release button. These features make it one-quarter inch taller and only six ounces heavier than the Spotmatic F.

The standard color for the Electro Spotmatic was black, which was a departure for previous Pentax M42 bodies where black was a special order. With both the ES and ES II, chrome was the special order version. The ES was released in 1972 and had completely revised circuitry that addressed the reliability issues the Electro Spotmatic had. The name was shortened to ES on the face of the body.


Asahi Pentax Electro Spotmatic
Year introduced
1971
Year discontinued
1972
Mount
M42
Automatic aperture stop down
Yes
Metering
Open aperture, centerweight
Meter range
EV 1 to 18
ISO range
20 to 1600
DX ISO range
No DX coding
Exposure modes
Av, Manual, B
Exposure compensation
1/2x, 2x and 4x
Exposure memory lock
No
Shutter speeds (auto)
8s - 1/1000s (stepless)
Shutter speeds (manual)
B, 1/60 (X), 1/125, 1/150, 1/500, 1/1000s
Shutter speeds (mechanical)
B, 1/60 (X), 1/125, 1/150, 1/500, 1/1000s
Self timer
No
Mirror lock-up
No
Auto bracketing
No
Multiple exposures
Yes
Winder
Ratchet type rapid wind lever. 10 pre-advance and 160 advance angle
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
0.89x (with 50mm lens), 93% coverage
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
6V silver oxide battery
Battery grip/pack
No
Size (W x H x D)
143 x 98 x 50mm (without lens)
Weight
678g




Attached Images
     

Last edited by Ole; 10-10-2010 at 04:30 PM.
Closed Thread

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
50mm, aperture, electro, es, ii, lens, pentax, shutter, speeds, spotmatic
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Electro Spotmatic (Black) and ES 2 (Black). senator Pentax Film SLR Discussion 36 02-21-2012 03:49 PM
For Sale - Sold: Pentax ME Super w/ 50mm 1.7, Pentax AF200S, Yashica Electro 35, Canon Canonet, bulbexposure Sold Items 7 02-26-2010 12:02 PM
Electro thomasjmpark Post Your Photos! 18 01-10-2008 02:04 AM



All times are GMT -7. The time now is 10:03 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top