Leica R bayonet

The Leica R bayonet lens mount is the standard method of connecting a lens to the Leica R series of 35 mm single-lens reflex cameras. The mount is descended from those used for the Leicaflex, Leicaflex SL and Leicaflex SL2 SLR cameras, but differs in the cams used to communicate lens aperture information to the camera. 3 cam lenses are compatible with all of the Leica SLR cameras, while R-only lenses have a slightly different mount shape that will not fit on the earlier cameras.

The flange focal distance between mount and film is 47 mm.

On 5 March 2009, Leica announced plans to cease production of its R-Series manual focus SLR and lenses.

Variants

1 cam

The original Leicaflex 1 cam lenses have a single sloped cam that communicates aperture setting to the camera. They can be used on later SL / SL2 and R-series cameras in stop-down metering mode only. Leica do not recommend that 1 cam lenses be used on R8 or R9 cameras because of possible damage to the cameras' ROM contacts. 1 cam lenses may be fitted with later 2 cams, 3 cams, or R cam + ROM contacts (replacing the sloped cams).

Leica R4-R7

Leica R4, R5, R6, R7 were 35mm SLR cameras manufactured by Leica between 1980 and 1996.

Following the success of the Leica R3 the company, in continuing cooperation with Minolta, produced the R4-R7 series all based on the same chassis.

R4 / R4s /R4sp

The Leica R4 was made from (1980 - 1986)

Based on Minolta XD-7 but with Leica developed exposure metering, mirror box, and newly designed body, the R4 followed the trend setting Olympus OM-1 and was much smaller and lighter than all earlier Leica SLR cameras. Like previous models the R4 offered selective metering and viewfinder information was comprehensive showing metering / exposure mode, shutter and aperture settings, exposure level, and flash ready.

The R4S (S stood for Simplified) and the R4SP (SP stood for Simplifed Professional) were simplified versions of the R4.

Five exposure / metering modes were available:

Leica R3

The Leica R3 was a 35mm SLR camera by Leica.

Leica launched the Leica R3 in 1976. It was the successor of the Leicaflex SL2, and was developed in cooperation with Minolta, together with the Minolta XE bodies.

It was a 35mm SLR with a Copal Leitz CLS electronic focal plane shutter.

The Leica Safari, a tropicalised version of the R3

The Leica Safari, a tropicalised version of the R3

Development

Following the Leicaflex series Leica took a totally new approach; the R3 was developed in cooperation with Minolta and closely based on their XE. Initially manufactured in Solms, Germany, production was later moved to the new Leica plant in Portugal.

In appearance very similar to the Minolta XE using the same electronics, the camera incorporated a Leica developed shutter and modifications to the metering system offering Leica's traditional facility of selective metering in addition to integrated (centre weighted) metering. It was the first Leica SLR camera to offer automatic exposure.

The camera was a commercial success at a very difficult time for the company, sales of the latest rangefinder Leica M5 had been very poor and the previous Leicaflex series had made little or no profit leaving the company in a precarious financial state, the R3's success seemed to indicate a new direction.

Leica

Leica may refer to:

See also

Metadata

Metadata is "data that provides information about other data". Two types of metadata exist: structural metadata and descriptive metadata. Structural metadata is data about the containers of data. Descriptive metadata uses individual instances of application data or the data content.

Metadata was traditionally in the card catalogs of libraries. As information has become increasingly digital, metadata is also used to describe digital data using metadata standards specific to a particular discipline. Describing the contents and context of data or data files increases their usefulness. For example, a web page may include metadata specifying what language the page is written in, what tools were used to create it, and where to find more information about the subject; this metadata can automatically improve the reader's experience.

The main purpose of metadata is to facilitate in the discovery of relevant information, more often classified as resource discovery. Metadata also helps organize electronic resources, provide digital identification, and helps support archiving and preservation of the resource. Metadata assists in resource discovery by "allowing resources to be found by relevant criteria, identifying resources, bringing similar resources together, distinguishing dissimilar resources, and giving location information."

Leica Standard

The Leica Standard, Model E was the fourth version of the original 35 mm Leica camera to be launched from Ernst Leitz in Wetzlar, Germany. The concept was conceived by their employee Oskar Barnack in 1913. Production of the camera began in 1925 but it wasn't until the end of the decade that it was perfected and full-scale production was established.

History

The Leica Standard, Model E was the fourth version of the original 35 mm Leica camera to be launched from Ernst Leitz in Wetzlar, Germany. The concept was conceived by their employee Oskar Barnack in 1913 at which time two prototypes were built. However, it was not until 1924 that Leitz decided to go ahead with the concept and production began the following year. By the end of the decade, the camera had been perfected and full-scale production was established.

The Leica Standard was introduced as a basic model by Ernst Leitz, Wetzlar in October 1932. The camera was in production at the same time as the Leica II and Leica III models that have coupled rangefinders; the latter also has the faster speed of 1/1000 sec. It has a standardised lens mount with distance from film plane to lens flange fixed to 28.8 mm, a Leitz standard. This feature was first seen on late Leica I model C cameras in 1931, and all Leica II, Model D from 1932, identified by a "0" (zero) stamped on the lens mount flange at the top, to indicate the implementation of the standard, a practice that was continued for some time. It is found on early Leica Standards as well. On the back of these models there is a hole covered by a black plug, presumably for back focus calibration. The original lens for the Leica Standard when introduced was the Leitz Elmar 1:3,5 F=50mm in a collapsible nickel-plated focusing mount with infinity catch.