Olympus OM system

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The Olympus OM System (O = Olympus, M = Maitani) was a line of 35mm single-lens reflex cameras, lenses and accessories sold by Olympus between 1972 and 2002 (some accessories were sold until early 2003).

The system was introduced by Olympus in 1972, more than a decade after Nikon, Canon, and other manufacturers had established their own SLR ranges; the range was designed by Yoshihisa Maitani, chief designer for Olympus, and his staff. The nucleus of the system was a series of compact bodies divided into an advanced series and a later consumer-oriented series; the first model was the all-mechanical M-1 which, after pressure from Leica (which already had an M1 model), was renamed OM-1. At the same time the M system was renamed OM System; the camera included a full-aperture TTL Cadmium-sulphide (CdS) exposure meter, and a bayonet lens mount of relatively large diameter. By the end of the 1970s it was joined by the semi-automatic OM-2 and consumer-oriented OM-10. Olympus continued the naming pattern with the 'professional' OM-3 and OM-4, and the consumer-level OM-20, OM-30 and OM-40; the cameras were accompanied by a series of Zuiko-branded lenses, as well as a generous selection of accessories. The majority of OM bodies and lenses were manual-focus only; the OM-707 of 1986 was the only true autofocus model.

Camera models[edit]

Olympus produced a wide variety of OM camera models over the years; these were divided into two distinct series. Cameras with single-digit model numbers were the 'professional' series, optimized for more advanced features and durability. Two-digit (or more) model numbers, or letters, meant a 'consumer' camera designed for ease of use.

All the consumer-grade models were discontinued after 1992, since the market for manual-focus SLR cameras had declined greatly; the consumer line returned in 1997 with the Cosina-sourced OM-2000 model. Professional and advanced-amateur demand for the high-end models continued, and they were produced until 2002, along with the consumer-grade OM-2000.[1]

Chronology of OM-system cameras[2]
1970s 1980s 1990s 2000s
Model 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
M-1
OM-1
OM-1 MD
OM-1N
OM-2
OM-2N
OM-2S/SP
OM-3
OM-3Ti
OM-4
OM-4T/Ti chrome
OM-4T/Ti black
OM-10
OM-10 Quartz
OM-20 (OM-G)
OM-30(OM-F)
OM-40 (OM-PC)
OM-77AF (OM-707)
OM-88 (OM-101)
OM-2000

Professional cameras[edit]

OM-1[edit]

The Olympus OM-1 was a manually-operated 35 mm single-lens reflex camera forming the basis of the OM system in 1972. At first called the Olympus M-1, Leica disputed this designation and it was changed to OM-1, it was designed by a team led by Yoshihisa Maitani with a through-the-lens exposure meter controlling a needle visible in the viewfinder. It was noted for its reduction of size, weight and noise. One feature unique to the OM-1, compared to the rest of the OM system, was its mirror lock-up facility which made it ideal for astrophotography and macrophotography.

OM-2[edit]

Introduced in 1975, the Olympus OM-2 was a semi-automatic, aperture-priority camera featuring an electronically controlled shutter, it was based on the OM-1 body, and retained compatibility with OM-1 accessories and lenses. It boasted automatic through-the-lens (TTL) off-the-film (OTF) metering, and exposure was considered very accurate; this was calculated by the measured light reflected off the surface of the shutter, and/or the film surface during the actual exposure. The camera also offered a manual-exposure mode, as in the OM-1, it also introduced the integration of electronic flash into the exposure system using the TTL exposure system.

OM-3[edit]

The OM-3 was an updated version of the OM-1, a manual camera without automatic exposure modes, and an entirely mechanical shutter, it featured a multi-spot metering system (shared with the OM-4) in addition to the centre-weighted metering of the earlier body. It also featured an LCD similar to the OM-4 which could be illuminated in low light, its main advantage over the OM-4 was its ability to operate without batteries due to its mechanical design. Batteries were only needed for the exposure meter and LCD, it lacked a self-timer, however.

In 1995, nine years after the OM-3 was discontinued, the OM-3Ti was released, it shared the improvements over the OM-3 that the OM-4Ti held over the OM-4.

OM-4[edit]

The Olympus OM-4, an improved version of the OM-2, was manufactured from 1983 to 1987, it was introduced at a US$685 list price for the body alone. It was a battery-powered, electromechanically controlled, manual focus SLR with manual exposure control or aperture priority autoexposure, it used a horizontal cloth focal plane shutter with a speed range of 240s (in auto mode) to 1/2000s plus bulb, and flash X-sync of 1/60s.

The OM-4 featured a built-in spot meter [of a narrow acceptance angle, see Canon FTb] (2% of view; 3.3˚ with 50 mm lens) and was the first camera capable of measuring eight individual areas and averaging them. The light meter used a dual-concentric segmented silicon photo-diode to provide spot or centerweighted readings, it used a graduated linear LCD for the shutter speed at the bottom of the viewfinder to precisely indicate its readings versus the actual camera settings.

In 1986 the OM-4 was improved to a tougher OM-4Ti (OM-4T in USA) version, with titanium top and bottom plates, improved weatherproofing and high-speed flash sync; this last version was discontinued in 2002.

Consumer-grade cameras[edit]

OM-10[edit]

The OM-10 hit the markets in June 1979 at the same time as the OM-2N; the camera was a 35mm focal-plane shutter aperture priority AE SLR camera with an electronic shutter. Only aperture-priority AE was available with the camera unless the optional manual exposure adapter was installed; this allowed the setting of shutter speeds between 1s and 1/1000s, (bulb mode was also available). The camera was equipped with a fixed pentaprism viewfinder which contained an LED exposure indicator; the finder coverage was measured to be 93%.

Exposure control was aperture priority AE using center-weighted light metering. Film speeds of the camera range from ASA 25 to ASA 1600. Film winding was done by using the film-wind lever located on the top right of the camera. Film rewinding was done manually using the film-rewind crank located at the top left; the camera body measured 136 × 83 × 50 mm and weighed approximately 430 grams (15 oz).

OM-20[edit]

The OM-20 (sold in the United States as the OM-G) was essentially a refinement of the OM-10, replacing that model's rather tricky mode switch with one that was easier to use; the OM-20 also had a built-in shutter-speed dial, a mode display in the view finder and a much stronger winding mechanism which permitted it to be used at 5 frames per second on the OM Motor Drive 2. The shutter magnet and release system had other minor design improvements.

OM-30[edit]

Essentially an OM-20 with auto-focus capability. With a normal lens there were lights in the view finder to help the user with manual focusing.

When used with a motor drive or winder unit and the M-In Focus Trigger cord, the lens could be pre-focused on a specific point; as soon as an object moved into that focus zone the camera would trigger a shot.

A special motorised 35-70mm autofocus lens was also available at the time, but is now very rare.

OM-40[edit]

A further refinement of the OM-20 with features that were more of interest to serious photographers, it had a lighter, slightly more modern and ergonomic body design. It also had an early form of matrix metering, and a mirror lock-up facility; this was activated when the self-timer was switched on, a feature still rarely found in non-high-end cameras.

Also known in some markets as the OM-PC, the OM-40 had a program mode that automated the selection of both the aperture and the shutter speed.

OM-2000[edit]

An Olympus model made by Cosina, the OM-2000 was not considered by Olympus 'die-hard fans' to be a 'true OM' camera.

The OM-2000 had a mechanical, vertical-running shutter in contrast to the traditional OM cameras with their horizontal-running shutter; this allowed the OM-2000 to synchronize an electronic flash at 1/125s. Many photographers found this capability an advantage for the use of "fill flash" in daylight.

Prototype cameras[edit]

OM-X[edit]

During the design study of the OM-1, the Olympus design team led by Yoshihisa Maitani had worked on a completely modular camera, like a 35 mm Hasselblad; this camera was built as a prototype, and was called the OM-X.[3]

Lenses[edit]

Olympus Zuiko OM 50 mm f/1.8
OM system lenses.

The OM Series lenses had the aperture control ring located at the front of the lens barrel; this was done to move it away from the shutter speed control, which was a ring on the camera body concentric with the lens mount. OM lenses also featured a depth-of-field preview button on the lens, in contrast to most other SLR camera systems, in which the button was placed on the camera body.

Olympus OM - Canon EOS adapter.

The OM lens was designed to sit 46 mm (measured from the lens mounting ring, or flange) from the film plane; the combination of on-lens aperture control and the generous 'flange focal distance' make OM lenses adaptable (with limited functionality) to a variety of other camera systems – including Canon EOS models – by using a mount-specific adapter.

Zuiko lenses specifications[4]
Lens Angle of view Elements – Groups Diaphragm Aperture range Closest focus Smallest field Focusing Weight Length Diameter Hood Filter
8 mm F2.8 Fisheye 180° (circle) 11–7 Auto 2.8–22 0.2 m - Straight helicoid 640 g 82 mm 102 mm Not necessary Built-in (L39,Y48, O56,R60)
16 mm F3.5 Fisheye 180° 11–8 Auto 3.5–22 0.2 m - Straight helicoid 180 g 31 mm 59 mm Not necessary Built-in

(L39,Y48, O56)

18 mm F3.5 100° 11–9 Auto 3.5–16 0.25 m 30×20 cm Straight helicoid 250 g 42 mm 62 mm 49 mm Adapter Ring 49→72 72 mm Screw-in (w.Adapter Ring 49→72)
21 mm F2 92° 11–9 Auto 2–16 0.2 m 21×14 cm Straight helicoid 250 g 43.5 mm 60 mm 55 mm Screw-in [57 mm Slide-on] 55 mm Screw-in
21 mm F3.5 92° 7–7 Auto 3.5–16 0.2 m 21×14 cm Straight helicoid 180 g 31 mm 59 mm 49 mm Screw-in 49 mm Screw-in
24 mm F2 84° 10–8 Auto 2–16 0.25 m 23×15 cm Straight helicoid 280 g 48 mm 60 mm 55 mm Screw-in 55 mm Screw-in
24 mm F2.8 84° 8–7 Auto 2.8–16 0.25 m 23×15 cm Straight helicoid 180 g 31 mm 59 mm 49 mm Screw-in 49 mm Screw-in
24 mm F3.5 Shift 84° (100° at max. shift) 12-10 Manual 3.5–22 0.35 m 36×24 cm Rotating cam(Inner focus) 510 g 75 mm 84 mm Fixed Built-in (neutral, Y48,O56, R60)
28 mm F2 75° 9–8 Auto 2–16 0.3 m 27×18 cm Straight helicoid 250 g 43 mm 60 mm 49 mm Screw-in 49 mm Screw-in
28 mm F2.8 75° 6–6 Auto 2.8–22 0.3 m 18×27 cm Straight helicoid 170 g 32 mm 60 mm 49 mm Screw-in 49 mm Screw-in
28 mm F3.5 75° 7–7 Auto 3.5–16 0.3 m 18×27 cm Straight helicoid 180 g 31 mm 59 mm 49 mm Screw-in 49 mm Screw-in
35 mm F2 63° 8–7 Auto 2–16 0.3 m 21×14 cm Straight helicoid 240 g 42 mm 60 mm 55 mm Screw-in 55 mm Screw-in
35 mm F2.8 63° 7–6 Auto 2.8–16 0.3 m 21×14 cm Straight helicoid 180 g 33 mm 59 mm 51 mm Slide-on 49 mm Screw-in
35 mm F2.8 Shift 63° (83° at max. shift) 8–7 Manual 2.8–22 0.3 m 21×14 cm Straigh helicoid 310 g 58 mm 68 mm 49 mm Screw-in 49 mm Screw-in
40 mm F2 56° 6–6 Auto 2–16 0.3 m 18×12 cm Straight helicoid 140 g 25 mm 60 mm 49 mm Screw-in 49 mm

Screw-in

50 mm F1.2 47° 7–6 Auto 1.2–16 0.45 m 24×16 cm Straight helicoid 285 g 43 mm 65 mm 51 mm Slide-on 49 mm Screw-in
50 mm F1.4 47° 7–6 Auto 1.4–16 0.45 m 24×16 cm Straight helicoid 230 g 36 mm [40 mm] 60 mm 51 mm Slide-on 49 mm Screw-in
50 mm F1.8 47° 6–5

[6–4]

Auto 1.8–16 0.45 m 24×16 cm Straight helicoid 170 g [165 g] 31 mm [32 mm] 59 mm [61 mm] 51 mm Slide-on 49 mm Screw-in
50 mm F2Macro 47° 9–7 Auto 2–16 0.24 m 7.2×4.8 cm Straight helicoid 320 g 55 mm 69 mm Not necessary 55 mm Screw-in
50 mm F3.5Macro 47° 5–4 Auto 3.5–22 0.23 m 7.2×4.8 cm Straight helicoid 200 g 40 mm 60 mm Not necessary 49 mm Screw-in
55 mm F1.2 43° 7–6 Auto 1.2–16 0.45 m 23×15 cm Straight helicoid 310 g 47 mm 65 mm 57 mm Slide-on 55 mm Screw-in
85 mm F2 29° 6–4

[5–4]

Auto 2–16 0.85 m 25×17 cm Straight helicoid 260 g 46 mm 60 mm 49 mm Screw-in 49 mm Screw-in
90 mm F2Macro 27° 9–9 Auto 2–22 0.4 m 7.2×4.8 cm Straight helicoid 550 g 71 mm 72 mm 57 mm Slide-on 55 mm Screw-in
100 mm F2 24° 7–6 Auto 2–22 0.7 m 18×12 cm Straight helicoid 520 g 72 mm 70 mm Built-in 55 mm Screw-in
100 mm F2.8 24° 5–5 Auto 2.8–22 1m 29×19 cm Straight helicoid 230 g 48 mm 60 mm 49 mm Screw-in 49 mm Screw-in
135 mm F2.8 18° 5–5 Auto 2.8–22 1.5 m 32×21 cm Straight helicoid 360 g 80 mm 61 mm Built-in 55 mm Screw-in
135 mm F3.5 18° 5–4 Auto 3.5–22 1.5 m 32×21 cm Straight helicoid 290 g 73 mm 60 mm Built-in 49 mm Screw-in
180 mm F2 14° 10–8 Auto 2–22 1.6 m 25×17 cm Rotating cam (Inner focus) 1,900 g 174 mm 113 mm Built-in 100 mm Screw-in
180 mm F2.8 14° 5–5 Auto 2.8–32 2 m 32×21 cm Straight helicoid 700 g 124 mm 80 mm Built-in 72 mm Screw-in
200 mm F4 12° 5–4 Auto 4–32 2.5 m 36×24 cm Straight helicoid 510 g 127 mm 67 mm Built-in 55 mm Screw-in
200 mm F5 12° 6–5 Auto 5–32 2.5 m 36×25 cm Straight helicoid 380 g 105 mm 62 mm Built-in 49 mm Screw-in
250 mm F2 10° 12–9 Auto 2–22 2.2 m 25×17 cm Rotating cam (Inner focus) 3,900 g 246 mm 142 mm Built-in Slip-in (46 mm rear filter)
300 mm F4.5 6–4 Auto 4.5–32 3.5 m 33×22 cm Straight helicoid 1,100 g (1,020 g without tripod collar) 181 mm 80 mm Built-in 72 mm

Screw-in

350 mm F2.8 9–7 Auto 2.8–32 3 m 25×17 cm Rotating cam (Inner focus) 3,900 g 280 mm 142 mm Built-in Slip-in (46 mm rear filter)
400 mm F6.3 5–5 Auto 6.3–32 5 m 36×24 cm Straight helicoid 1,300 g 255 mm 80 mm Built-in 72 mm Screw-in
500 mm F8 Reflex 5–2 - F8 (Single aperture) 4 m 28×19 cm Straight helicoid 590 g 97 mm 81 mm Built-in 72 mm Screw-in
600 mm F6.5 6–4 Auto 6.5–32 11 m 55×37 cm Rack and pinion 2,800 g 377 mm 110 mm Built-in 100 mm Screw-in
1000 mm F11 2.5° 5–5 Auto 11–45 30 m 98×65 cm Rack and pinion 4,000 g [4,150 g] 662 mm 110 mm Built-in 100 mm Screw-in
28–48 mm F4 75°–49° 8–8 Auto 4–22 0.65 m 74×49 cm (28 mm) 46×31 cm (48 mm) Rotating helicoid 300 g 54 mm (at 48 mm setting) 65 mm 55 mm Screw-in 49 mm Screw-in
35–70 mm F3.5–4.5 63°–34° 9–8 Auto 3.5–22 0.45 m 21.7×14.5 cm (close focus, 70 mm) Rotating helicoid 190 g 51 mm 62 mm 51 mm Slip-on 49 mm Screw-in
35–70 mm F3.5–4.8 63°–34° 7–7 Auto 3.5–22 (35 mm) 4.8–32 (70 mm) 0.4 m 22×15 cm Straight helicoid 185 g 65 mm 63 mm 52 mm Screw-in 52 mm Screw-in
35–70 mm F3.6 63°–34° 10–8 Auto 3.6–22 0.8 m 72×48 cm (35 mm) 37.5×25 cm (70 mm) Straight helicoid 400 g 74 mm 67 mm 60 mm Slide-on 55 mm Screw-in
35–70 mm F4 64°–34° 7–7 Auto 4–22 0.75 m 72×48 cm (35 mm) 36×24 cm (70 mm) Straight helicoid 385 g 71 mm 69 mm 57 mm Slide-on 55 mm Screw-in
35–70 mm F4 Auto Focus 63°–34° 9–8 Auto 4–22 0.75 m 72×48 cm (35 mm) 36×24 cm (70 mm) Rotating helicoid 550 g (without batteries) 70 mm 92 mm 55 mm Screw-in 55 mm Screw-in
35–80 mm F2.8 63°–30° 16–14 Auto 2.8–22 0.6 m 62×41 cm (35 mm) 31×20 cm (80 mm) rotating focusing helicoid, rotating cam zoomring 650 g 99 mm 69 mm Bayonet mount 62 mm Screw-in
35–105 mm F3.5–4.5 63°–23° 16–12 Auto 3.5–22 (35 mm) 4.5–22 (105 mm) 1.5 m (0.31 m at close focus) 129×86 cm (35 mm) 45×30 cm (105 mm) close focus: 18×12 cm (35 mm) 25×17 cm (105 mm) rotating focusing helicoid and push-pull zoomring 470 g 85 mm 64 mm 55 mm Screw-in 55 mm Screw-in
50–250 mm F5 47°–10° 13–10 Auto 5–32 1.80 m (1.53 m at 250 mm, close focus) 103×69 cm (50 mm) 22×14 cm (250 mm) rotating focusing helicoid and push-pull zoomring 780 g 140 mm 72 mm Built-in 55 mm Screw-in
65–200 mm F4 37°–12° 14–11 Auto 4–32 1.2 m (0.85 m at close focus, 200 mm) 48×32 cm (65 mm) 17×11 cm (200 mm) 12×8 cm (200 mm, close focus) rotating focusing helicoid and push-pull zoomring 730 g 147 mm 71 mm Built-in 55 mm Screw-in
70–210 mm F4.5–5.6 34°–11° 10–7 Auto 4.5–22 (70 mm) 5.6–28 (210 mm) 1.14 m ? Straight helicoid 335 g 103 mm 63 mm 52 mm Screw-in 52 mm Screw-in
75–150 mm F4 32°–16° 15–11 Auto 4–22 1.6 m 64×42 cm (75 mm) 32×21 cm (150 mm) Revolving helicoid 440 g 115 mm 63 mm Built-in 49 mm Screw-in
85–250 mm F5 29°–10° 15–11 Auto 5–32 2 m 66–44 cm (85 mm) 23×15 cm (250 mm) Revolving helicoid 890 g 196 mm 70 mm Built-in 55 mm Screw-in
100–200 mm F5 24°–12° 9–6 Auto 5–32 2.4 m 69×46 cm (100 mm) 37×25 cm (200 mm) rotating focusing helicoid and push-pull zoomring 570 g 148 mm 63 mm Built-in 49 mm Screw-in
20 mm F2 9° at highest magnifi-cation 6–4 Auto 2–16 - 0.86×0.57 cm (4.2×) 0.26×0.18 cm (13.6×) with Auto Bellows, 65–116, Auto Extension Tube 14, 15; fine focusing straight helicoid built-in 170 g 46 mm 60 mm not necessary -
20 mm F3.5 9° at highest magnifi-cation 4–3 Manual 3.5–16 - 0.84×0.56 cm (4.3×) 0.29×0.19 cm (12.4×) with Auto Bellows 70 g 20 mm 32 mm Not necessary 21 mm Slide-on
38 mm F2.8 9° athighest magnifi-cation 6–4 Auto 2.8–22 - 0.21×0.14 cm (1.7×) 0.54×0.36 cm (6.7×) with Auto Bellows, 65–116, Auto Extension Tube 14, 15; fine focusing straight helicoid built-in. 170 g 46 mm 60 mm Not necessary -
38 mm F3.5 9° at highest magnification 5–4 Manual 3.5–16 - 0.20×0.13 cm (1.8×) 0.59×0.39 cm (6.1×) with Auto Bellows 90 g 28 mm 43 mm Not necessary 32 mm Slide-on
80 mm F4 (Manual) 9° at highest magnifi-cation 6–4 Manual 4–22 - 7.20×4.80 cm (2.3×) 1.80×1.20 cm (2.0×) with Auto Bellows 200 g 46 mm 59 mm Not necessary 49 mm Screw-in
80 mm F4 (Auto) 9° athighest magnifi-cation 6–4 Auto 4–32 0.23 m 7.20×4.80 cm (2.3×) 1.80×1.20 cm (2.0×) with Auto Bellows, 65–116; fine focusing straight helicoid built-in 170 g 33 mm 60 mm not necessary 49 mm Screw-in
135 mm F4.5 18° 5–4 Auto 4.5–45 0.6 m 7.2×4.8 cm with Auto Bellows, 65–116; fine focusing straight helicoid built-in 320 g 47 mm 60 mm 57 mm Slide-on 55 mm Screw-in
24 mm F2.8AF 84° 8–7 Automatic control on camerabody 2.8–22 0.25 m 24×16 cm Driven by AF/PF coupler on camera body 170 g 32 mm 62 mm Built-in 49 mm Screw-in
28 mm F2.8AF 75° 6–6 Automatic control on camera body 2.8–22 0.3 m 27×18 cm Driven by AF/PF coupler on camera body 170 g 32 mm 62 mm Built-in 49 mm Screw-in
50 mm F1.8AF 47° 6–5 Automatic control on camera body 1.8–22 0.45 m 24×16 cm Driven by AF/PF coupler on camera body 170 g 32 mm 62 mm Built-in 49 mm Screw-in
50 mm F2PF 47° 6–4 Automatic control on camera body 2–22 0.45 m 24×16 cm Driven by PF coupler on camera body 150 g 37 mm 64 mm Slide-on 49 mm

Screw-in

50 mm F2.8AF Macro 47° 8–7 Automatic controlon camera body 2.8–32 0.2 m 3.6×2.4 cm Driven by AF/PF coupler on camera body 340 g 57 mm 66 mm Built-in 49 mm Screw-in
28–85 mm F3.5–4.5AF 75°–29° 14–11 Automatic control on camera body 3.5–22 (28 mm) 4.5–27 (85 mm) 0.8 m (at close focus: 0.6 m) 85×57 cm (28 mm) 22×15 cm (85 mm) Driven by AF/PF coupler on camera body 480 g 84 mm 69 mm Slide-on 55 mm Screw-in
35–70 mm F3.5–4.5AF 63°–34° 9–8 Automatic control on camera body 3.5–22 (35 mm) 4.5–32 (70 mm) 0.75 m (at close focus: 0.45 m) 40.4×27 cm (35 mm) 21.7×14.5 cm (70 mm, close focus) Driven by AF/PF coupler on camera body 250 g 53 mm 69 mm Slide-on 49 mm Screw-in
35–70 mm F3.5–4.5PF 63°–34° 9–8 Automatic control on camera body 3.5–22 (35 mm) 4.5–32 (70 mm) 0.75 m (at close focus 0.45 m) 40.4×27 cm (35 mm) 21.7×14.5 cm (70 mm, close focus) Driven by PF coupler on camera body 250 g 53 mm 69 mm Slide-on 49 mm Screw-in
35–105 mm F3.5–4.5AF 63°–23° 14–13 Automatic control on camera body 3.5–22 (35 mm) 4.5–27 (105 mm) 1.5 m (at close focus: 0.85 m) 129×86 cm (35 mm) 22×14 cm (105 mm, close focus) Driven by AF/PF coupler on camera body 460 g 84 mm 69 mm Slide-on 55 mm Screw-in
70–210 mm F3.5–4.5AF 34°–11° 12–9 Automatic control on camera body 3.5–22 (70 mm) 4.5–32 (210 mm) 1.5 m (at close focus: 1.35 m) 52×34 cm (70 mm) 18×12 cm (210 mm, close focus) Driven by AF/PF coupler on camera body 790 g 125 mm 76 mm Slide-on 55 mm Screw-in

Prototype lenses[edit]

Manual Zuiko lenses that were never marketed:

  • 18 mm/f3.5, prototype of 18 mm/f3.5, L.zuiko with 12 elements 10 group, fixed 72 mm thread
  • 50 mm/f2 pancake, prototype of 40 mm/f2 pancake
  • 85 mm/f1.4, prototype, with GRIN (GRadient INdex of Refraction) elements
  • 160 mm/f3.5, prototype
  • 300 mm/f6.3, prototype
  • 400 mm/f4.5, prototype
  • 500 mm/f5.6, prototype
  • 800 mm/f9, prototype
  • 1200 mm/f14, prototype
  • 24–40 mm/f4, prototype[5]
  • 90–250 mm prototype of 85–250/5

Accessories[edit]

Being a system, Olympus made numerous accessories for professional portrait, photo journalism, sport photography and scientific photography.[6]

  • motor drives and exchangeable camera back for 250 exposures
  • lighting: dedicated flashes, shoes, cords, connectors, power sources, adapters and filters
  • interchangeable focusing screens instead of bulkier exchangeable finders
  • macrophotography: extension tubes, stands & bases, lightings and accessories
  • microphotography: systems and connecting, focusing, automatic and manual exposure units
  • technical photography: data recording backs, endoscope and astrophotography adapters
  • cases, grips, cable release, battery holders

See also[edit]

References[edit]

  1. ^ ""OM system" 35 mm single lens reflex cameras sales terminated" (Press release). Olympus Optical Co., Ltd. January 17, 2002. Retrieved 2006-08-17.
  2. ^ Hawkins, R. Lee (2003-08-11). "What years were the various OM cameras produced?". Olympus OM SLR FAQ. Archived from the original on 2000-12-12. Retrieved 2006-08-17.
  3. ^ Kouichi Akagi. "interview with Yoshihisa Maitani". Asahi Camera Magazine (March 2002). Archived from the original on October 27, 2009. Retrieved 2006-08-16.CS1 maint: Unfit url (link)
  4. ^ Unofficial Olympus OM Sales Information File, Hans van Veluwen
  5. ^ "Archived copy". Archived from the original on 2009-04-12. Retrieved 2009-04-01.CS1 maint: Archived copy as title (link)
  6. ^ Olympus OM-1(n) & OM-2 (n) SLR cameras, Rick Oleson, Bruce hamm, Simon Evans & Mark Dapoz; Photography in Malaysia

External links[edit]