Carl Zeiss Touit Distagon T* 12mm F/2.8

Ultra-wide angle prime lens • Digital era

T* The multi-layer coating is applied to the surface of lens elements. It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares.

Sample photos

F/5
F/2.8
F/8
F/13
F/8
F/13
F/4.5
F/4
F/4.5
F/4.5
F/6.3
F/6.3
F/6.3
F/13
F/5
F/4.5
F/4
F/11
F/4.5
F/5.6
F/2.8
F/4.5
F/13
F/4.5
F/13
F/5.6
F/8
F/5.6
F/4.5
F/10
F/2.8
F/2.8
F/2.8
F/2.8
F/2.8
F/3.5
F/2.5
F/5.6
F/13
F/3.5
F/2.8
F/5.6
F/13
F/18
F/13
F/13
F/22
F/8
F/7.1
F/2.8
F/6.3
F/2.8
F/4
F/13
F/2.8
F/2.8
F/2.8
F/2.8
F/2.8
F/10
F/2.8
F/3.2
F/2.8
F/8
F/8
F/8
F/5.6
F/2.8
F/2.8
F/2.8
F/4
F/2.8
F/2.8
F/8
F/3.2
F/8
F/10
F/13
F/9

Sample photos uploaded by users

F/9
F/8
F/9

Designed for

Click to expand or collapse section(s)

Features highlight

APS-C
Extreme AoV
Fast
2 ASPH
3 AD
F.E.
9 blades
IF
MM

Specification

Production details
Announced:September 2013
Production status:In production
Production type:Mass production
Original name:Carl Zeiss Distagon 2.8/12 T*
Optical design
Focal length:12mm
Speed:F/2.8
Maximum format:APS-C
Mount:Fujifilm X
Sony E
Diagonal angle of view:99.7° (Fujifilm X APS-C)
99.3° (Sony E APS-C)
Lens construction:11 elements - 8 groups
2 ASPH, 3 AD
Floating element system
Diaphragm mechanism
Number of blades:9
Focusing
Closest focusing distance:0.18m
Maximum magnification ratio:1:9 at the closest focusing distance
Focusing method:Internal focusing (IF)
Focusing modes:Autofocus, manual focus
Manual focus control:Focusing ring
Autofocus motor:Micromotor
Focus mode selector:None; focusing mode is set from the camera
Manual focus override in autofocus mode:Determined by the camera
Optical Image Stabilizer (OIS)
Built-in OIS:-
Physical characteristics
Weight:260g (Sony E)
270g (Fujifilm X)
Maximum diameter x Length:⌀88×81mm (Sony E)
⌀88×86mm (Fujifilm X)
Weather sealing:-
Fluorine coating:-
Accessories
Filters:Screw-type 67mm
Lens hood:Bayonet-type 2049-550 (petal-shaped)

*) Sources of data: Manufacturer's technical data ● ZEISS Lenses for Mirrorless System Cameras booklet (PUB. EN_10_025_0019V).

Manufacturer description #1

New ZEISS lenses for compact system cameras

New market segment for ZEISS camera lenses – first members of Touit family with dealers starting June

OBERKOCHEN, June 3, 2013 - Starting immediately, the first two members of the new ZEISS lens family Touit are available with dealers. With the extreme wide angle lens Touit 2.8/12 and the robust standard lens Touit 1.8/32, both for Fujifilm X and Sony NEX cameras, ZEISS is entering the new market for compact system cameras (CSC) with autofocus, interchangeable lenses. The new lens series is characterized by a powerful optical and mechanical design, which fully exploits the potential of the cameras thanks to the low distortion and stray-light absorption. Noteworthy is also the professional product design of the new lens family, which has already won several design prizes.

“With Touit photographers can use ZEISS lenses on two leading mirrorless system cameras,” says Michael Schiehlen, Director of Sales at ZEISS Camera Lenses. “We are addressing this market because it offers interesting application possibilities for sophisticated photographers and because the segment promises very interesting growth.”

By supporting Fujifilm X and Sony NEX, ZEISS has decided on cameras with an APS-C sensor in order to guarantee maximum image quality. The APS-C sensor is the largest possible sensor currently available on the market for this segment. The Touit lenses are characterized by their high production quality, guaranteeing longtime usage. Like all ZEISS lenses they also offer outstanding imaging performance. Typical for the new family is above all the combination of compactness, light weight and precise, durable mechanics. “High imaging quality and light weight are the most important advantages of Touit and are especially interesting for ambitious users of compact system cameras,” says Schiehlen. “The angular view is identical to DSLR lenses for APS-C cameras, but the lens is significantly smaller and lighter.” The metal body underscores the lenses’ robustness and durability. Those parts that are not relevant to key functions were designed in high-quality plastic in order to reduce weight. Compatibility with all Sony NEX and Fujifilm X camera functions, a clearly accentuated 1/3-step aperture ring on the version for Fujifilm X, nine aperture blades for an almost circular bokeh, as well as excellent stray-light absorption through the ZEISS T* coating are the hallmarks of the design of this new lens family.

The Touit 2.8/12 offers the most extreme wide angle fixed focal length in the current APS-C range. “It is an extremely sophisticated lens which has been equipped with the great effort and care that an extreme focal length of 12 millimeters requires,” explains Dr. Michael Pollmann, who is responsible for the development of the Touit lenses at ZEISS. The lens has eleven lens elements arranged in eight groups and was designed according to the Distagon optical concept. In addition, the lens has floating elements, two aspheric lenses and three lens elements made of high quality glass materials with anomalous partial dispersion. This lens is especially suited for nature and architectural photography. The product design of the Touit 2.8/12 has received an iF as well as a red dot product design award.

As announced during photokina 2012, the Touit 2.8/50 Makro will come on the market at the end of 2013. Other focal lengths will follow.

Manufacturer description #2

Thanks to the combination of one of the widest fields of view in APS-C format photography with fantastic imaging performance and light weight, this lens makes wide-angle photography even more fascinating.

With an angle of view of 99 degrees, the ZEISS Touit® 2.8/12 wide-angle lens will soon become a firm favourite, particularly for landscapes and architectural photography. Its unique ZEISS T*® multicoating guarantees maximum transmission and outstanding absorption of extraneous light. The result: breathtaking image quality from edge to edge and corner to corner of the entire image field. What’s more, all moving parts of the ZEISS Touit 2.8/12, conceived specifically for APS-C cameras of the Sony Alpha series with E-Mount and Fujifilm X Series, are engineered for extreme precision and a long service life. And finally, its strong and rigid metal bayonet mount makes it an absolutely dependable companion for many years to come.

Typical application

landscapes, interiors, buildings, cityscapes, travel

Lenses with similar focal length

Sorted by manufacturer name

Your comment

Copy this code

and paste it here *

Copyright © 2012-2021 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

Travellers' choice

Note

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

Professional lens

One of the best ultra-wide angle prime lenses

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

Unable to follow the link

You are already on the page dedicated to this lens.

Cannot perform comparison

Cannot compare the lens to itself.

Zeiss Batis series

Professional full-frame autofocus lenses for Sony mirrorless cameras.

Zeiss Loxia series

Compact, full-frame manual focus lenses for Sony mirrorless cameras.

Zeiss Touit series

Autofocus lenses for Sony and Fujifilm APS-C mirrorless cameras.

Zeiss ZM series

Lenses with exceptional workmanship for rangefinder cameras.

Zeiss Otus series

Full-frame manual focus lenses specially designed for modern digital SLR cameras with high-resolution sensors. Deliver uncompromising performance, even at full aperture. Offer the standard of quality otherwise only achieved on medium format systems.

Zeiss Milvus series

Full-frame manual focus lenses specially designed for modern digital SLR cameras with high-resolution sensors. Optimal image performance for all focal lengths.

Zeiss Classic series

Full-frame manual focus lenses developed for ambitious photographers and their wide diversity of applications: macro, landscape, architecture, portrait, journalism, fashion and beauty. Enjoyed an outstanding reputation with photographers all over the world for many years. Characterized by classic appearance and high optical performance. Offer an excellent entry into premium class photography.

Unique Zeiss Look

Zeiss lenses are one-of-a-kind optical masterpieces that are impressive because of their unique Zeiss Look. This is ensured through exceptional optical design combined with selected materials and the highest quality standards.

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.

Micromotor

Micromotor

Aspherical elements

Aspherical elements (ASPH, XA, XGM) are used in wide-angle lenses for correction of distortion and in large-aperture lenses for correction of spherical aberration, astigmatism and coma, thus ensuring excellent sharpness and contrast even at fully open aperture. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Aspherical element can substitute one or several regular spherical elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. It is difficult to predict such effect, but usually it occurs when the highlights are small enough and far enough out of focus.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission. These optical glasses have a performance equal to fluorite glass.

High-refraction low-dispersion elements

High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

High Index, High Dispersion elements

High Index, High Dispersion elements (HID) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Anomalous partial dispersion elements

Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Fluorite elements

Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. They are also significantly lighter than optical glass.

According to Nikon, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating.

Short-wavelength refractive elements

High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. This technology also results in smaller and lighter lenses.

Blue Spectrum Refractive Optics

Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology.

Diffraction elements

Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality.

High refractive index elements

High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Apodization element

Apodization element (APD) is in fact a radial gradient filter. It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh.

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 from the lens mount to the film or sensor can also be different.

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.

Flange focal distance

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

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.

Floating element system

Provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. It is particularly effective for the correction of field curvature that tends to occur with large-aperture, wide-angle lenses when shooting at close ranges.

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.

Convex protruding front element

The convex front element protrudes from the lens barrel, making it impossible to use filters.

Fixed focus

There is no helicoid in this lens and everything is in focus from the closest focusing distance to infinity.

Overall linear extension

The entire lens optical system moves straight backward and forward when focusing is carried out. This is the simplest type of focusing used mainly in wide-angle and standard prime lenses. It has the advantage of introducing relatively little change in aberrations with respect to change in focusing distance. With telephoto and super telephoto lenses this method becomes less beneficial in terms of operability because of the increased size and weight of the lens system.

Front group linear extension

The rear group remains fixed and only the front group moves straight backward and forward during focusing. This method is primarily used in zoom lenses and allows to design comparatively simple lens construction, but also places restrictions on zoom magnification and size reduction.

Front group rotational extension

The lens barrel section holding the front lens group rotates to move the front group backward and forward during focusing. This method of focusing is also used only in zoom lenses.

Internal focusing (IF)

Focusing is performed by moving one or more lens groups positioned between the front lens group and the diaphragm.

Methods of internal and rear focusing have the following advantages:

Rear focusing (RF)

Focusing is performed by moving one or more lens groups positioned behind the diaphragm.

Methods of internal and rear focusing have the following advantages:

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.