Asahi Pentax Electro Spotmatic is a small format single - lens reflex camera manufactured by Asahi Optical in Japan from 1971 to 1972. In the foreign market, the camera was sold under the name Asahi Pentax ES until 1973. The world's first serial camera with automatic exposure control in aperture priority mode , implemented on the basis of a TTL exposure meter [4] [5] .
| Asahi Pentax Electro Spotmatic Asahi pentax es Honeywell Pentax ES | |
|---|---|
 | |
| Type of | Single Lens Reflex Camera |
| Manufacturer | Asahi optical |
| Year of issue | 1971-1973 [1] |
| Lens mount | Threaded connection M42 × 1 |
| Photo material | Type 135 film |
| Frame size | 24 × 36 mm. |
| Focusing | Manual |
| Exposition | TTL metering. |
| Gate | Electromechanical focal horizontal stroke, 8 [2] [3] - 1/1000 sec stepless, B. |
| Flash | Hot shoe : X; Cable: X, FP. |
| Viewfinder | Mirrored with fixed pentaprism . 0.89 × magnification. |
| Dimensions | 143 × 98 × 91 mm. |
| The weight | 940 g |
Content
- 1 History
- 2 Some technical specifications
- 3 Camera Name
- 4 notes
- 5 Links
Appearance History
They tried to automate the photography process for a long time. At the Photokina- 66 exhibition, Asahi Optical presented two unusual prototypes: Asahi Pentax Metalica II and Asahi Pentax Memorica . The first was equipped with an automatic aperture priority , and the second with an automatic shutter priority . When the first automated camera was prepared for mass production, preference was given to the priority of the diaphragm. So in 1971, Asahi Pentax Electro Spotmatic appeared on the domestic Japanese market. In the same year, an identical camera with the short name Asahi Pentax ES appeared for the foreign market.
Some specifications
- Excerpts worked out by an electronically controlled mechanical shutter: B , 8 [3] [2] - 1/1000 sec (stepless).
- Mechanical shutter speeds (available in manual mode): B, 1/1000, 1/500, 1/250, 1/125, and 1/60 sec.
- Shutter Speed - 1/60 sec.
- The flash can be connected with a sync cable: X and FP synchronization are available or through the “ hot shoe ”: only X-synchronization is available .
- No self-timer .
- Aperture repeater .
- With SMC Takumar lenses, metering is performed with the aperture open, transmitting a preset lens aperture value.
- With earlier lenses, metering is only performed on the working aperture, as these lenses cannot transmit the value of the preset aperture.
- Built - in TTL exposure meter ( CdS ) EV1-18.
- Exposure compensation −1 EV - + 2EV in increments of 1EV.
- Powered the camera electronics from a single 544 element (2CR, 1 / 3N). (Sequential assembly of four elements LR44 ).
- The viewfinder displays: battery status and shutter speed arrow (showed shutter speeds only in the range of 1/1000 - 1 second [6] ).
- Microprism Fresnel Focusing Screen
- Film sensitivity is entered using the ring under the rewind tape in the range of 20-3200 ASA.
- In manual mode, the camera’s electronics are turned off and no exposure tips are displayed.
- Possibility to install Asahi Pentax Motor Drive electrical tape drive.
Camera Name
Honeywell was the exclusive distributor of Asahi Optical in the United States from 1959 to 1974. In this regard, all Asahi Optical cameras in the United States were sold under the Honeywell trademark [7] , which was reflected in the logo on the front of the pentaprism.
Notes
- ↑ Production of the model for the domestic Japanese market Asahi Pentax Electro Spotmatic was discontinued in 1972
- ↑ 1 2 (fr.) Asahi Pentax ES: photos, specifications, description.
- ↑ 1 2 User Manual: page 4.
- ↑ (Rus.) Ermolaev P.N. “Photo Courier” No. 6 (114) 2006 “The Golden Age of Asahi Pentax”.
- ↑ In 1965, the USSR launched the Kiev-10 camera with the same mode, but implemented using an obsolete exposure meter with an external photocell
- ↑ User Guide, page 14.
- ↑ Until 1961, Heiland .
Links
- (Rus.) Ermolaev P.N. “Photo Courier” No. 6 (114) 2006. “The Golden Age of Asahi Pentax”.
- (English) Operation manual.
| Asahi Optical Co. Single Lens Reflex Cameras , Pentax Corp. , Hoya Corp. Ricoh | |
| Series | Model |
|---|---|
| Film ( type 135 ), with M37 × 1 threaded connection. | |
| Asahiflex | Asahiflex I , Asahiflex II |
| Film ( type 135 ), with M42 × 1 threaded connection. | |
| Pentax | Pentax , S , K , S2, H2 , S3, H3 , S1, H1 , SV, H3v , S1a, H1a , S2 Super |
| Spotmatic | Spotmatic , SL , SPII, SPIIa , SP500 , SP1000 , Electro Spotmatic, ES , ESII , Spotmatic F |
| Film ( type 135 ), K-mount , without autofocus | |
| TO | K2 , K2 DMD , KX , KM , K1000 |
| M | MX , ME , ME Super , MG , MV , MV1 |
| Lx | Lx |
| A | superA, Super Program , programA, program PLUS , A3, A3000 |
| P | P3, P30 , P5, P50 , P3n, P30n, P30t |
| Mz / zx | MZ-M, ZX-M |
| Medical | MF , MF-1 |
| Film ( type 135 ), K-mount , with autofocus | |
| M | ME F |
| SF | SFX, SF1 , SF7, SF10 , SFXn, SF1n |
| Z / PZ | Z-1, PZ-1 , Z-10, PZ-10 , Z-20, PZ-20 , Z-50p , Z-1p, PZ-1p , Z-5 , Z-5p , Z-70, PZ- 70 |
| Mz / zx | MZ-5, ZX-5 , MZ-10, ZX-10 , MZ-3 , MZ-5n, ZX-5n , MZ-50, ZX-50 , MZ-7, ZX-7 , MZ-30, ZX- 30 , MZ-S , MZ-6, MZ-L, ZX-L , MZ-60, ZX-60 |
| * ist | * ist |
| Film ( type 110 ) | |
| 110 | Auto 110 , Auto 110 Super |
| Film ( medium format ) | |
| 67 | 6x7 , 67 , 67II |
| 645 | 645 , 645N , 645NII |
| Digital ( medium format ) | |
| 645 | 645D , 645Z |
| Digital (full frame) | |
| K | K-1 , K-1 II |
| Digital ( APS-C ) | |
| * ist D | * ist D , * ist DS , * ist DS2 , * ist DL , * ist DL2 |
| K | K-3 , K-3 II , K-5 , K-5 II, K-5 IIs , K-7 , K10D , K20D , K-30 , K-50, K-500 , K-70 , K100D , K100D Super , K110D , K200D , K2000, Km , Kr , K-S1 , K-S2 , KP , Kx |
| Mirrorless camera | |
| Bayonet K | K-01 |
| Bayonet Q | Q , Q-7 , Q-10 , Q-S1 |
| Non-batch production | |
| Digital | MZ-D , AP 50th Anniv. |