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Cosina Voigtlander BESSA-R2S

35mm MF film rangefinder camera

Cosina Voigtlander BESSA-R2S

Specification

Production details
Announced:September 2002
System: Voigtlander BESSA (SC) (2002)
Rangefinder and Viewfinder
Rangefinder:Built-in, combined with viewfinder
Viewfinder:Built-in, combined with rangefinder
Finder magnification:0.7x
Actual rangefinder base:37mm
Effective rangefinder base:25.9mm
Bright-line frames:35mm, 50mm, 85mm
Parallax compensation:Yes
Imaging plane
Maximum format:35mm full frame
Mount and Flange focal distance:Nikon S [34.85mm]
Imaging plane:36 × 24mm film
Shutter
Type:Focal-plane
Model:Mechanical
Speeds:1 - 1/2000 + B
Exposure
Exposure metering:Through-the-lens (TTL)
Exposure modes:Manual
Physical characteristics
Weight:520g
Dimensions:135.5x81.5x43.5mm

Manufacturer description #1

Type: 35mm camera with mechanical focal plane shutter and TTL metering system.

Shutter: Vertically moving metal focal plane shutter B, 1-1/2000 sec.

Focusing: Coincidence type.

Exposure display: Over exposure warning, Good exposure warning, Under exposure warning.

Exposure Metering System: Center-weighted average metering. By pressing Shutter Release Button.

Exposure Coupling Range: EV1-19 (ISO 100, F1.4, 1sec.-F15, 1/2000sec.).

Flash Terminal: Synchronized at 1/125 sec or lower speed.

Film Advance: By single and/or ratchet lever action. Double exposure lock system. Trigger winder available as optional extra.

Film Rewind: By film rewind button and film rewind crank.

Frame Counter: Additive type with autoreset by opening camera back.

Film Speed Range: ISO 25-3200 by 1/3 steps.

Power Source: Two 1.5V Alkaline batteries (LR44) or Silver batteries (SR44).

***

The Voigtlander BESSA R2 and R2S are compact and lightweight mechanical shutter rangefinder cameras with TTL exposure metering and LED finder readout.

The body has a built in lens helical and inner bayonet for 50mm lenses, and an outer bayonet mount for all other lenses.

This design allows much smaller 50mm lenses compared to other rangefinder mounts.

Manufacturer description #2

Compatibility of S and C mount

While the exterior mounts and back focus for classic Nikon Rangefinder lenses and classic Zeiss Contax Rangefinder lenses are the same, the helical travel is different between the two mounts. At the present time, all Voigtlander SC lenses are Nikon Rangefinder mount, though the 35 and shorter lenses will work on classic Contax mount cameras.

  • Some standard and tele lens of classic Contax rangefinder are slightly hard to fit on R2S (for Nikon S series). On the other hand, some standard and tele lens of Nikon S rangefinder series are slightly lose on R2C (for classic Contax rangefinder). With wide angle lenses, there is no problem.
  • There is a difference between Nikon S series and Contax Rangefinders on the helical rotation between infinity to 0.9m on helicoid. The BESSA R2S is designed for Nikon rangefinder mount lenses. The BESSA R2C is designed for classic Contax rangefinder lenses (not the modern Contax G mount).
  • When interchanging lenses between the R2S and R2C systems, the difference between the wide angle lenses is generally to be so small as to be negligible. On 50mm and longer lenses, focusing inaccuracies between the two lens lines increase as A) the focal length increases B) the focused distance decreases and C) aperture increases.

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm

Travellers' choice

Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

One of the best

According to lens-db.com; among lenses designed for the same maximum format and mount.

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SL series

Full-frame manual focus lenses developed for ambitious photographers and their wide diversity of applications: macro, landscape, architecture, portrait, journalism, fashion and beauty. Characterized by classic appearance and high optical performance.

SL II series

Full-frame manual focus lenses developed for ambitious photographers and their wide diversity of applications: macro, landscape, architecture, portrait, journalism, fashion and beauty. Characterized by classic appearance and high optical performance.

Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.