Leica M3
From Wikipedia, the free encyclopedia
| Leica M3 | |
|---|---|
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| Type | 35 mm rangefinder camera |
| Lens mount | Leica M mount |
| Focus | manual |
| Exposure | manual |
| Flash | standard accessory shoe with separate bulb and electronic flash connectors |
| Dimensions | 138 x 77 x 33.5mm, 580g |
The Leica M3 was a 35 mm rangefinder camera by Leica AG, introduced in 1954. It was a new starting point for Leitz, which until then had only produced screw-mount Leica cameras that were incremental improvements to its original Leica (Ur-Leica). Leica M cameras are still in production today. The M3 introduced several features to the Leica, among them the combination of viewfinder and rangefinder in one bright window, and a bayonet lens mount.
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[edit] Mount
This new bayonet mount, which has not been changed in the following half century, is called the Leica M mount. Lenses are changed faster than with a screw mount, and framelines set automatically. Non-Leitz/Leica bayonet-mount lenses can also be used (although none were produced in any quantity while the M3 was sold), and a simple adapter also allows the use of screwmount lenses (whether from Leitz or other companies).
[edit] Viewfinder
When compared to a Leica IIIf (the previous Leica release), the M3 has an exceptionally bright viewfinder. It has a high magnification factor, which is very useful in critical focusing. The M3 has a factor of 0.92×, while other Leicas use 0.85×, 0.72×, or less. Furthermore, it was the first Leica to combine rangefinder and viewfinder into one window. (Other cameras, such as the Contax II, already had this feature before the war; and other companies were making screwmount bodies with combined finders.) Framelines for 50, 90 and 135mm are shown, although none for any wider lenses. However, Leica solved this problem in two different ways. One was using a separate viewfinder slid into the accessory shoe. The other way is the use of so called Leica glasses; auxiliary lenses are put in front of the viewfinder and rangefinder windows for the 35mm focal length. The drawback of these glasses is they reduce the famed brightness of the finder.
The 50 mm framelines are always visible. The viewfinder image is slightly larger. There are two ways to select the 90mm or 135mm framelines. Putting a 90mm lens on the camera will automatically select the corresponding framelines. The other way is toggling a small lever on the left of the lens. This way, you can see the tele-framelines when using a 50mm lens. It helps you to visualise the field of view for another focal length.
Viewfinder cameras don't show the exact same image in the viewfinder and on the film. This parallax problem is compensated in the M3 by moving the framelines when you focus the lens. This parallax compensation has its limits, but in most practical situations, it works well.
[edit] Film transport
Leica IIIF and its predecessors had used a knob to advance the film. For fear of tearing the film, early M3s had a double stroke advance lever, just as the Neoca 2s had. Later models had single-stroke levers, which speeded up operation of the camera. Another type of variation is in the film pressure plate used. Early models used a glass plate to keep the film flat; later models used a metal plate.
[edit] Shutter
Earlier Leicas had used two rotating rings with separate slow and fast speeds, as on the Exakta Varex. The M3 combined slower and faster speeds and the dial doesn't rotate any more when firing. Supposedly, this reduces vibrations in the camera. Early models used a non-geometrical series of shutter speeds. On later models this became the international standard of 1s to 1/1000s.
[edit] Successors
Puzzlingly, the M3 was succeeded by the M2, which in turn was followed by the M1. All Leica M series cameras can be recognised by their resemblance to the M3 that started the series. Many consider the M3 to be the most beautiful Leica ever made. At the same time, the lack of wide-angle framelines is sometimes regretted.
 Leica M3 fitted with a lightmeter |
 modern Digital Classic Camera Leica M3, a miniature digital reedition of the Leica M3 by Minox |
[edit] External links
- Leica M3 on jck.net
- Leica M3 by Karen Nakamura
- Leica M3 - the original M rangefinder on Leica FAQ
- Leica M3 at camerapedia
- Leica M3 on pacificrimcamera.com
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This article was originally based on "Leica M3" in Camerapedia, retrieved at an unknown date under the GNU Free Documentation License.
