Carl Zeiss Planar T* 80mm F/2.8 CB

Standard prime lens • Film era • Discontinued

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Carl Zeiss Planar T* 80mm F/2.8 CB

Abbreviations

T* Multi-layer anti-reflection coating is applied to the surfaces of lens elements. This anti-reflection coating boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares.
CB A lens with Prontor shutter. Basic lens type. Learn more

Features highlight

6x6
Fast
LS
MF
Auto
Compact

Specification

Production details:
Announced:September 1997
Production status: Discontinued
Original name:Carl Zeiss Planar 2,8/80 T* CB
System:Hasselblad V (1957)
Optical design:
Focal length:80mm
Speed:F/2.8
Maximum format:Medium format 6x6
Mount and Flange focal distance:Hasselblad V [74.9mm]
Diagonal angle of view:52.3°
Lens construction:6 elements in 5 groups
Diaphragm mechanism:
Diaphragm type:Automatic
Aperture control:Aperture ring (Manual settings only)
Number of blades:<No data>
Built-in leaf shutter:
Type:Mechanical Prontor
Speeds:1 - 1/500 + B
Focusing:
Closest focusing distance:0.9m
Maximum magnification:<No data>
Focusing modes:Manual focus only
Manual focus control:Focusing ring
Physical characteristics:
Weight:550g
Maximum diameter x Length:⌀83.2×64.7mm
Accessories:
Filters:Bayonet-type 60mm
Lens hood:<No data>
Teleconverters:<No data>
Source of data:
Manufacturer's technical data.

Manufacturer description #1

Göteborg Sep 97 - Hasselblad News Autumn 1997

The Hasselblad System, the most comprehensive medium format system in the world, continues to expand! Both existing and new customers will be pleased at what is on offer. Imminent launches include a new camera - the Hasselblad ArcBody, specially destined for industrial, architectural and creative photography, the new CB lens line, the 501CM camera in black trim complete with the new Planar CB 2.8/80 mm lens, a new superachromatic lens with dedicated converter and a new versatile grip for hand-held flash photography.

[...]

- The CB lens line is a new range of high-quality lenses from Carl Zeiss. It comprises three lenses of similar cosmetic design and intended for different fields of application; a high performance wide angle lens - the Distagon CB 3.5/60 mm, the all-round lens - Planar CB 2.8/80 mm and the telephoto lens - Tessar CB 4.8/160 mm. The superb image quality of these lenses in combination with a favourable price-level naturally places them as an attractive alternative, especially with a view to photographers entering the Hasselblad System for the first time. The design of the CB lenses incorporates several new ergonomic features i.e. a distinct legibility of the scale lettering and a positive grip of the shutter-speed setting ring. All grip controls can be operated with gloves and are designed for better comfort. A new low-friction mechanism allows exceptionally precise and sensitive focusing. Lacking the "F" setting of the main CF lens range, the CB lenses are primarily intended for the 500 series but may also be successfully used on the 200 series cameras.

- Hasselblad 501CM camera kit in black with CB lens. The 501CM camera model featuring Gliding Mirror System (GMS), introduced earlier this year, is now available both in chrome and black trim. It can be purchased either as a separate camera body or as a complete kit, equipped with the new Planar CB 2.8/80 mm lens. With its attractive price, the kit offers an ideal opportunity to those photographers wishing to enter the Hasselblad System, with the separate body being a useful item for committed Hasselblad photographers requiring an additional camera body. The 501CM is the latest addition to the Hasselblad 500 series and accepts the razor-sharp Zeiss CB and CF lenses with integral shutters which provide flash sync at all shutter speeds.

Manufacturer description #2

The legendary Carl Zeiss 80 mm Planar T* f/2.8 CB lens is an all-round, high-speed lens for use with all Hasselblad cameras of the 200 and 500 type. Its extremely flat field (hence the name "Planar") makes it suitable for virtually all fields of photography. New knowledge in the mathematics of lens design and the use of novel technologies made it possible to implement this optical setup with 6 lens elements. At the same time, Carl Zeiss has markedly reduced the amount of scattered light in this lens. Its design incorporates new ergonomic features. The legibility of the scale lettering has been considerably improved over that of the lenses of the previous CF line. The shutter-speed setting ring provides considerably more grip. All grip controls can be operated with gloves and are rounded for greater comfort. The flash terminal features a lock for the flash lead connector. A new, low-friction focusing mechanism allows exceptionally precise, sensitive focusing. The front bayonet has been designed as a smooth-action type and ensures smooth mounting of high-quality filters, lens hoods and effects boxes. The bayonet will retain its matte black color and absorbs any knocks or bangs on the front edge of the lens. Due to the new, broader structure of the camera connection bayonet of the CB lens, it has been possible to markedly increase the rigidity of this bayonet compared with the previous CF-type. The integrated between-lens shutter ensures exact interaction with the mechanical functions of cameras and accessories. In addition, the use of new materials has made it possible to increase the service life of the lens bayonet even further.

Alternatives in the Hasselblad V system

Sorted by focal length and speed, in ascending order

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Standard prime lens

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Professional model (Top class)

  • Designed for medium format cameras

Copyright © 2012-2023 Evgenii Artemov. All rights reserved. Translation and/or reproduction of website materials in any form, including the Internet, is prohibited without the express written permission of the website owner.

35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

MF

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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 diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/2.8 on this lens, and cannot be adjusted.

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.