User manual OLYMPUS OM-1

[. . . ] With its many system components, the OM-1 permits an infinite range of photographic capabilities . . . a camera that grows as your needs expand. To get the optimum results from your OM-1, carefully study this Owner's Manual. It is well worth your time, and will provide a sound basis for years of fine OM-1 photographs. 1 DESCRIPTION OF CONTROLS Film Take-Up Spool Viewfinder Eyepiece Frame Battery Check Lamp (P. [. . . ] Light will enter the camera body through this hole, fogging the film. Also, dust and dirt may enter, causing a camera malfunction. Why doesn't my electronic flash unit fire when I release the shutter?If the shutter speed is 1 /125 second or faster in conjunction with the electronic flash T32 or T20, the built-in incorrect flash prevention system does not permit flashing. (See page 31. ) Why do I feel a small electrical shock when I touch the terminal contact of the accessory shoe?This is normal when using a side-mounting type flash. When using flash that is not connected to the accessory shoe, remove or cover the shoe. page 21. ) 46 THE MOST IMPORTANT FEATURE OF THE OM-1-TTL DIRECT(OTF)LIGHT MEASURING Diagram of light path in conventional SLRs Before shutter release Light Sensor Position Diagram of light path in OM-1 Before shutter release Stray Light The instant the shutter has been released (A memory device controls the shutter speed, based on the light reading taken before actual exposure. ) The instant the shutter has been released Light Sensor Position In the automatic mode, the OM-1 measures the subject brightness very differently from any other automatic camera -- faster and with much more accuracy. With the OM-1, light entering the lens is measured directly at the film plane by the sen47 sors at the precise moment the film is being exposed. When sufficient light has reached the film, the electronic brain senses the information and instantly closes the shutter. Exposure range of OM-1 in automatic mode Exposure range of conventional Shutter Speed at F1. 2 AE SLRs Advantageous Points of Through-The-Lens Direct (off-the-film) Light Measuring Method 1. The OM-1 sensors respond instantly to changes in the light during exposure and feed back the be automatically exposed for up to 120 seconds at F1. 2. The Method excludes all possibilities of stray light leaking through the camera eyepiece and affecting the exposure reading. 3 ) 0. 8) (0. 8) 280g (9. 9) 180g ( 6 . 3 ) 0. 25m 23×15cm 27×18cm 27×18cm 21×14cm 21×14cm AUTO. AUTO. 35mm F2. 8 63° (83° at max shift) 55mm F1. 2 50mm F1. 4 50mm F1. 8 50mm F3. 5 35-70mm F3. 6 STANDARD 1. 8-16 3. 5-22 3. 6-22 4-22 5-32 2-16 2. 8-22 2. 8-22 3. 5-22 2. 8 32 4-32 0. 3 m (1. 0) 0. 3 m (1. 0) 0. 3 m (1. 0) 0, 3 m (1. 0) 0. 3 m (1. 0) 0. 45m (1. 5) 0. 45m (1. 5) 0. 45rn ( 1 . 5 ) 21×14cm 23×15cm 24×16cm 24×16cm 0. 23m 08 m 0. 8) 72×48cm 72×43cm~25×37. 5cm 64×42cm~32×21cm 66×44cm~23×15cm 29×19cm 29×19cm 32×21cm 32×21cm 32×21cm 250g (8. 8) 180g (6. 3) 240g (8. 5) 180g (6. 3) 310g(10. 9) 310g(10. 9) 230g ( 3 . 1 ) 420g(14. 8) 440g(15. 5) 890g(31. 4) 260g ( 9 . 1 ) 360g(12. 7) 290g(10. 2) 700g(24. 7) 510g(18. 0) 380g(13. 4) AUTO, AUTO. AUTO. ZUIKO ZOOM 75-150mm F4 ZUIKO MC ZOOM 85-250mm F5 ZUIKO MC ZUIKO ZUIKO MC ZUIKO ZUIKO MC ZUIKO MC ZUIKO TELEPHOTO 85mm 100mm 135mm 135mm 180mm 200mm F2 F2. 8 F2. 8 F3. 5 F2. 8 F4 (2. 7) 1. 6 m (5. 2) 2 m (6. 0) 0. 85m (2. 8) . 1 m 1. 5 m 1. 5 m 2 m (3. 3) (4. 9) (4. 9) (6. 0) (8. 2) (8. 2) 5­4 6­5 6­4 5­5 6­4 5­5 4­3 5­4 6­4 5­4 2. 5 m 36×24cm 36×24cm 200mm F5 ZUIKO SUPER TELEPHOTO ZUIKO MC ZUIKO MC ZUIKO MC ZUIKO MC MACRO S P E C I A L USE ZUIKO MC MACRO 300mm F4. 5 400mm F6. 3 8° 6" 4° 2. 5° 9° at highest mag. 9° at highest mag. 600mm F6. 5 1000mm F11 20mm F3. 5 38mm F3. 5 AUTO AUTO. AUTO. 5 32 4 5-32 6. 3-32 6. 5-32 11-45 3. 5-16 3. 5-16 4-32 4. 5-45 2. 5 m 35 m (11. 5) 5 m (16. 4) 11 m (36. 1) 30 m (98. 4) W/Auto Bellows & PM-MT ob 33×22cm 36×24cm 55×37cm 98×65cm max. 6 × 4 mm 1100g(38. 8) 1300g(46. 0) 2800g(98. 8) 4000g(141. 0) 70g ( 2 . [. . . ] Shutter: Focal plane shutter, automatic exposure control from 120 seconds to 1 /1, 000 second and rotating film speed dial. Auto/Manual selection: By selector lever. Power source: Two 1. 5V silver oxide batteries SR44 (Eveready EPX-76 or equivalent). Battery check: 3-stage battery check lamp (light (ASA 100, F1. 2, at normal temperature and humidity). Manual exposure: B, 1--1/1, 000 sec. , ring mounted control. [. . . ]