Tamron 11-20mm F/2.8 Di III-A RXD B060

Wide-angle zoom lens • Digital era

DI III-A The lens is designed only for Sony APS-C digital mirrorless cameras.
RXD The lens is equipped with Rapid eXtra-silent stepping Drive.

Features highlight / 機能のハイライト

APS-C
Constant F/2.8
ASPH
IF
RXD
WR
FC

Specification / 仕様

Production status and name / 生産状況と名称
Announced / 発表: April 2021
Production status / 生産状況: In production
Original name / 元の名前: TAMRON 11-20mm F/2.8 Di III-A RXD B060
Optical design / 光学設計
Maximum format / 最大フォーマット: APS-C
Mount / マウント: Sony E
Diagonal angle of view / 対角画角: 104.2°-70.5° (Sony E APS-C)
Lens construction / レンズ構造: 12 elements - 10 groups
2 ASPH, 1 XLD, 2 LD
Diaphragm mechanism / ダイヤフラムメカニズム
Number of blades / 絞り羽根の数: 7
Zooming / ズーミング
Zooming method / ズーム方法: Rotary
Zoom type / ズームタイプ: Extends while zooming
Focusing / フォーカシング
Closest focusing distance / 最短撮影距離: 0.15m @ 11mm
0.24m @ 20mm
Maximum magnification ratio / 最大倍率: 1:7.6 @ 20mm at the closest focusing distance
Focusing method / フォーカシング方法: Internal focusing (IF)
Focusing modes / フォーカシングモード: Autofocus, manual focus
Manual focus control / マニュアルフォーカス制御: Focusing ring
Autofocus motor / オートフォーカスモーター: Rapid eXtra-silent stepping Drive
Focus mode selector / フォーカスモードセレクター: None; focusing mode is set from the camera
Manual focus override in autofocus mode / オートフォーカスモードでの手動フォーカスオーバーライド: Determined by the camera
Image stabilizer / 手ぶれ補正
Vibration Compensation (VC): -
Physical characteristics / 体格的特徴
Weight / 重量: 335g
Maximum diameter x Length / 最大直径x長さ: ⌀73×86.2mm
Weather sealing / ウェザーシーリング: Water-resistant barrel
Fluorine coating / フッ素コーティング: Front element
Accessories / 付属品
Filters / フィルタ: Screw-type 67mm
Lens hood / レンズフード: Bayonet-type HA046 (petal-shaped)
  • Toggle description in Japanese

    メーカーの説明

    その一枚に、心が躍る。

    新しい景色が広がる、世界初*1大口径F2.8超広角ズーム

    11-20mm F/2.8 DiⅢ-A*2 RXD (Model B060)は、F2.8通しというこれまでにない明るさと抜群の携帯性を備えたAPS-Cサイズミラーレス一眼カメラ対応のソニーEマウント用大口径超広角ズームレンズです。F2.8の明るさはソニーEマウント用として世界初。暗い場所での撮影でもシャッター速度を速く保てるため、手ブレを抑えたシャープな写真を撮影できます。また、特殊硝材を効果的に配置し、諸収差を良好に補正。クリアな画質と高い解像性能を実現しました。サイズは大口径超広角ズームレンズとは思えないほど軽くコンパクトで、普段使いはもちろんのこと、荷物を減らしたい旅先でもおすすめです。さらに、広角端0.15m、望遠端0.24mの最短撮影距離を達成しており、被写体へ思い通りに近づくことができます。AF駆動には高速・精密なステッピングモーターユニットRXD (Rapid eXtra-silent stepping Drive)を搭載。簡易防滴構造や防汚コートも採用しており、屋外撮影も安心です。日常から旅先まで、目に映る全てがあなたの作品。フットワーク軽く大口径ならではの一枚が撮れるこのレンズが、撮る楽しさを広げます。

    *1 APS-Cサイズミラーレス用ソニーEマウント大口径F2.8超広角ズームにおいて。(2021年3月現在。タムロン調べ)

    *2 Di III-A:APS-Cサイズ相当ミラーレス一眼カメラ専用レンズ

    大口径超広角ズームレンズでダイナミックな一枚を

    焦点距離11-20mm (35mm判換算16.5-30mm相当)をカバーするこのレンズは、APS-Cサイズミラーレス用ソニーEマウント超広角ズームレンズとして世界初のF2.8の明るさを実現し、大口径ならではの柔らかいボケ味を堪能することができます。普段は自然な画角に近いテレ端付近でスナップ写真を撮りながら、時には広角端付近での迫力ある超広角撮影に挑戦するなど、その取り回しの良さと、大口径の明るさを活かすことで、これまで以上に自由度の高い撮影を楽しむことができます。屋内での人物、インテリア撮影など、様々なシーンで活躍する1本です。

    超広角ズームレンズとは思えないほどの小型軽量設計

    このレンズではAPS-CサイズのソニーEマウントカメラとの組み合わせを考慮し、圧倒的な小型軽量化を実現しました。そのサイズは、長さ86.2mm、質量は335g。本格的な大口径超広角ズームとは思えないほどに小さく、軽いレンズとなっており、重量を気にすることなく撮影に熱中することができます。対応するソニーAPS-Cサイズミラーレスカメラボディと組み合わせれば、手持ちでの静止画撮影はもちろんのこと、小型三脚やジンバルを使用した動画撮影でも快適にお使いいただけます。

    タムロン11-20mm F2.8の優れた光学性能

    Model B060は、本格的な大口径超広角ズームレンズとして描写力にこだわった高解像レンズです。そのレンズ構成は10群12枚。2枚のGM (ガラスモールド非球面)レンズをバランスよく配置することで、画面の全域で高い解像性能を維持しています。1枚のXLD (eXtra Low Dispersion)レンズと2枚のLD (Low Dispersion:異常低分散)レンズを採用し、大口径レンズの絞り開放付近で発生しやすい色収差を抑制。クリアな写りを実現しました。加えて、ソニー製カメラが搭載するレンズ補正機能を活用すれば、さらに高い描写性能を発揮します。

    最短撮影距離0.15mで楽しむワイドマクロの世界

    広角端での最短撮影距離は0.15m。高い近接撮影能力で被写体に思い通りに迫れます。最大撮影倍率は超広角ズームとしては驚異的な1:4となるため、近くの被写体はより大きく、遠くの被写体はより小さく写るという超広角レンズ特有のパースペクティブを活かした迫力あるワイドマクロ撮影が楽しめます。またF2.8の明るさを活かせば、背景をぼかした被写界深度の浅い、やわらかな表現も可能で、個性的な一枚を撮ることができます。

    APS-Cサイズ用大口径ズームシリーズ2本で楽しむ、多彩な撮影

    携行性の高さと高画質を両立した本レンズと、17-70mm F/2.8 Di III-A VC RXD (Model B070)を組み合わせれば、F2.8通しの明るさで35mm判換算16.5mm-105mmの画角をカバーできます。2本合わせた場合の質量は、わずか約860g。サイズと重量を大幅に抑えることで撮影中や移動時の負担を大幅に軽減でき、できるだけ荷物を減らしたい旅先などでも便利です。また、当社製フルサイズミラーレス用レンズの多くと共通の、フィルター径をφ67mmとしているため、PLフィルターをはじめとした各種フィルターを共有できる他、レンズ交換時に径の異なるキャップを探す手間が省けるなど高い利便性を発揮します。幅広い画角をカバーする2本のレンズでポートレートやテーブルフォト、風景写真など、多彩なジャンルの撮影を気軽にお楽しみください。

    シャッターチャンスを逃さない、タムロン独自の高性能AF

    AF駆動には独自開発のステッピングモーターユニットRXDを搭載。RXDはモーターの回転角度を精密に制御できるアクチュエーターで、減速ギアを介することなくダイレクトにフォーカス用レンズを駆動できます。これに加え、レンズ位置を高精度に検出するセンサーを組み合わせることで高速かつ精緻なAFを可能に。動きのある被写体を的確に捉えるだけでなく、動画撮影でもその力を発揮します。静粛性にもすぐれており、室内撮影など駆動音が気になる場面にも最適です。

    カメラの主な機能に対応

    ・ファストハイブリッドAF

    ・瞳AF

    ・ダイレクトマニュアルフォーカス(DMF)

    ・カメラ内レンズ補正(周辺光量、倍率色収差、歪曲収差)

    ・カメラによるレンズ本体ファームウェアアップデート

    ※各種機能につきましては各カメラにより異なります。詳しくはカメラの取扱説明書にてご確認ください。

    ※2021年3月現在。

    丸ボケを美しくする円形絞りの採用

    点光源を撮影した際に写る丸ボケに絞り羽根の形状が出るのを抑え、極力円形となるよう7枚羽根の円形絞りを採用。開放から2段絞っても円形に近い形状を維持しています。

    簡易防滴構造を採用

    屋外での使用を考慮し、レンズ鏡筒の可動部、接合部の各所に防滴用のシーリングを配する簡易防滴構造を採用しています。

    BBAR-G2コーティングが実現する圧倒的なヌケ感

    タムロンが力を入れて取り組んできたゴーストやフレアの発生を抑制するコーティング技術は、ついに次世代レベルへと到達。従来のレンズで使用していたBBAR (Broad-Band Anti-Reflection)コーティングは、その性能を大幅に上回るBBAR-G2コーティングへと進化しました。このコーティングは、ゴーストやフレアの発生を今まで以上に極限まで抑え、逆光条件でも被写体のディテールを緻密に描き出すことができます。この新たな技術が、圧倒的なヌケ感とクリアな表現を実現します。

    防汚コートを採用

    レンズ最前面に撥水性・撥油性に優れたフッ素化合物による防汚コートを採用。水滴、手の脂などが付いても拭き取りやすく、メンテナンスが容易です。

Manufacturer description

Offering the unprecedented brightness of constant F2.8 and outstanding portability, the 11-20mm F/2.8 Di III-A2 RXD (Model B060) is a fast-aperture ultra wide-angle zoom lens for Sony E-mount APS-C mirrorless cameras. The F2.8 maximum aperture is a world’s first for Sony E-mount APS-C mirrorless in this category. Because the fast-aperture lets you maintain a high shutter speed even when shooting in dark conditions, you can capture sharp images with minimal hand shake. Also, special lens elements have been optimally arranged to suppress optical aberrations. These features combine to produce clear images and high-resolution performance. The lens is so light weight and compact that it is hard to believe it is a fast-aperture ultra wide-angle zoom lens. This makes it ideal for regular use, and for travel when you want to carry a smaller camera bag. The 11-20mm F2.8 achieves an MOD (Minimum Object Distance) of 0.15m (5.9 in) at the widest end and 0.24m (9.4 in) at the 20mm end, ensuring the ability to close in on subjects as you please. The lens also incorporates a fast precision AF drive system with an RXD (Rapid-eXtra-silent stepping Drive) stepping motor unit. Moisture-Resistant Construction and Fluorine Coating join forces to offer additional protection when shooting outdoors. Everything you see, from daily life to travels, is in your photographic grasp with this lens. The 11-20mm F2.8 will expand your enjoyment of shooting by combining excellent portability with the ability to capture images unique to fast-aperture lenses.

Covering focal lengths from 11-20mm (equivalent to 16.5-30mm in full-frame format), this lens is the first ultra wide-angle lens for Sony E-mount APS-C mirrorless cameras in the world to achieve a maximum aperture of F2.8 and allows users to fully enjoy the soft bokeh effects, distinctive depth-of-field and unique perspective provided by a fast-aperture lens. Enjoy a higher degree of photographic freedom than ever before, such as taking regular snapshots at the 20mm end, which has a rather natural angle of view, and then challenging yourself to take powerful ultra wide-angle shots at the wide end – all while enjoying the easy handling and the advantages that fast-aperture lenses offer. The lens shines in various scenarios, including architecture, landscape, indoor environmental portraits, and interior photography.

The lens was designed to be exceptionally compact and light weight, an ideal match with Sony E-mount APS-C mirrorless cameras. It has an overall length of 86.2mm (3.4 in), and weighs 335g (11.8 oz). Imagine a lens so small and light that it is hard to believe it is a full-fledged fast-aperture ultra wide-angle zoom. You can concentrate on shooting without worrying about bulk or weight. When used with a compatible Sony E-mount APS-C mirrorless camera body, you will enjoy carefree handheld shooting of still images, or even find it easy to shoot video using a compact tripod or gimbal.

The 11-20mm F2.8 is a high-resolution lens that focuses on superb image quality as a full-fledged fast-aperture ultra wide-angle zoom. The optical construction includes 12 elements in 10 groups. High resolution performance is maintained across the entire frame with the well-balanced arrangement of two GM (Glass Molded Aspherical) lens elements. Two LD (Low Dispersion) and one XLD (eXtra Low Dispersion) lens elements are used to suppress the chromatic aberrations that tend to occur when shooting at the wide-open aperture of fast-aperture lenses. These features combine to render clear, crisp images. In addition, the use of the lens correction features built into Sony cameras lets users harness extra lens performance gains.

The MOD (Minimum Object Distance) is just 0.15m (5.9 in) at the widest end. This extreme close-range shooting performance allows you to get as close to a subject as you like. The maximum magnification ratio is 1:4 (an astonishing feat for an ultra wide-angle lens) and it unlocks powerful wide-angle macro shooting utilizing the unique perspective that makes near objects look larger, and distant objects smaller. Additionally, using the F2.8 maximum aperture produces a shallower depth-of-field that creates soft bokeh in the background, allowing users to take distinctive images with unique expressions.

The AF drive on the 11-20mm F2.8 includes an RXD motor unit to help you stay focused on the action. RXD uses an actuator to precisely control the rotational angle of the motor, allowing it to directly drive the focusing lens without passing through a reduction gear. A sensor that precisely detects the position of the lens enables high-speed and accurate AF, which is ideal when shooting continually moving subjects or recording video. And with a focusing system that is both smooth and quiet, the 11-20mm F2.8 lets you shoot free from stress not worrying the drive sound in a quiet environment.

TAMRON’s new 11-20mm F2.8 is compatible with many of the advanced features that are specific to mirrorless cameras. These includes:

  • Fast Hybrid AF
  • Eye AF
  • Direct Manual Focus (DMF)
  • In-camera lens correction (shading, chromatic aberration, distortion)
  • Camera-based lens unit firmware updates

A 7-blade diaphragm is configured to retain a smooth, circular-shaped aperture opening even when stopped down by two stops from the wide-open aperture. This produces a smooth-edged bokeh in background highlights.

For greater protection when shooting outdoors, leak-resistant seals throughout the lens barrel help protect your equipment.

TAMRON has long been an innovator of coating technologies that prevent ghosting and flare. Second-generation BBAR-G2 Coating is a groundbreaking advancement that provides vastly improved performance compared to the original BBAR (Broad-Band Anti-Reflection) Coating. The coating corrects for ghosting and flare to an unprecedented extent and renders fine subject detail with true clarity and stunning contrast even under backlit conditions.

The front surface of the lens element is coated with a protective fluorine compound that is water- and oil-repellant. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture, and fingerprints.

By combining the 11-20mm F2.8 and its balance of excellent portability and high image quality with the 17-70mm F/2.8 Di III-A VC RXD (Model B070), the combination of these two lenses covers an extreme range of focal lengths from 11mm to 70mm (equivalent to 16.5mm to 105mm on full-frame cameras) with a fast, wide-open aperture of F2.8. The combined weight of the two lenses is only approximately 860g (30.3 oz). Drastically reducing bulky size and weight can greatly lighten the load during shooting and transportation and is convenient during travel when you want to reduce the size and weight of your camera bag as much as possible. Additionally, like most of the TAMRON's other lenses for Sony E-mount cameras, the filter size is unified at 67mm. In addition to allowing the shared use of PL and various other filters between lenses, the unified size is also highly convenient as it eliminates the hassle of finding the right lens cap when switching lenses. With these two lenses covering a broad angle of view, users can easily enjoy photography spanning various genres from portrait work to tabletop photography and landscapes. Have it all!

Typical application / 典型的なアプリケーション

landscapes, interiors, buildings, cityscapes, travel

Recommendations / 推奨事項

  • If you need a wide-angle zoom lens primarily for shooting landscapes and/or you plan to use it on a tripod in order to get the best image quality, a slow-speed wide-angle zoom lens is what you really need: less weight and more affordable price are the advantages of lenses of this class.

Lenses with similar focal length range

Sony E 10-18mm F/4 OSS (SEL1018)APS-CPro 2012 Compare33

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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.

Professional lens (Top class)

One of the best fast wide-angle zooms

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

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You are already on the page dedicated to this lens.

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Cannot compare the lens to itself.

Quality control issues

The manufacturer of this lens does not provide adequate quality control. If you do decide to purchase this lens, do not order it online, but choose the best copy available in the store. In any case, there may also be problems with the build quality, and warranty repairs can take months.

Model produced in a small batch. It is collectible and can only be found on the secondary market.

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.

Rapid eXtra-silent stepping Drive

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.

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.

Rotary zoom

The change of focal length is achieved by turning the zoom ring and the manual focusing - by turning the separate focusing ring.

Push/pull zooming allows for faster change of focal length, however conventional method based on the rotation of the zoom ring provides more accurate and smooth zooming.

Push/pull zoom

The change of focal length and the manual focusing is achieved by one and the same ring. The change of focal length happens when the photographer moves the ring towards the mount or backwards and the rotation of the ring leads to change of focus.

Push/pull zooming allows for faster change of focal length, however conventional method based on the rotation of the zoom ring provides more accurate and smooth zooming.

Zoom lock

The lens features a zoom lock to keep the zoom ring fixed. This function is convenient for carrying a camera with the lens on a strap because it prevents the lens from extending.

Power Zoom

The lens features electronically driven zoom mechanism. It provides smoother, more natural zoom movements than you could accomplish by hand.

The Holy Trinity of lenses

The Holy Trinity of lenses refers to a three-lens set that covers a focal length range from the ultra-wide focal length of 14-16mm all the way long to the telephoto focal length of 200mm. The set typically consists of a 16-35mm ultra-wide angle zoom lens, a 24-70mm standard zoom lens and a 70-200mm telephoto zoom lens and usually represents the best constant-aperture zoom lenses in a manufacturer's lineup. The set is designed to cover almost every genre of photography, be it landscapes, architecture, portraits, weddings, sports, travel or even wildlife (with teleconverter). However, it is also expensive, large and heavy.