smc Pentax-DA* 50-135mm F/2.8 ED [IF] SDM

Telephoto zoom lens • Digital era

SMC 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.
* Professional lens with high quality optics and robust build. Meets the highest standards and provides excellent performance and flawless image quality unachievable with traditional optical technologies.
DA Autofocus lens optimized for Pentax digital SLR cameras.
ED The lens incorporates low dispersion elements.
[IF] The lens incorporates internal focusing.
SDM The lens is equipped with Supersonic Drive Motor.

Sample photos

135mm F/4
108mm F/4
135mm F/8
108mm F/2.8
135mm F/4
135mm F/6.3
123mm F/8
135mm F/5.6
95mm F/4
135mm F/5.6
135mm F/7.1
135mm F/5.6
135mm F/4
135mm F/4
135mm F/4
135mm F/5.6
103mm F/10
135mm F/4
135mm F/4
135mm F/4
135mm F/3.5
135mm F/8
58mm F/8
50mm F/8
90mm F/6.3
135mm F/9
50mm F/11
115mm F/4
115mm F/4
108mm F/4
108mm F/4

Sample photos uploaded by users

80mm F/4

Pentax *ist D

APS-C AF digital SLR camera

Announced ⋅ 発表: February ⋅ 2月 2003
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax *ist DS

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2004
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax *ist DL

APS-C AF digital SLR camera

Announced ⋅ 発表: June ⋅ 六月 2005
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax *ist DS2

APS-C AF digital SLR camera

Announced ⋅ 発表: August ⋅ 8月 2005
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax *ist DL2

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Samsung GX-1S

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Samsung GX-1L

APS-C AF digital SLR camera

Announced ⋅ 発表: February ⋅ 2月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax K100D

APS-C AF digital SLR camera

Announced ⋅ 発表: May ⋅ 5月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K110D

APS-C AF digital SLR camera

Announced ⋅ 発表: May ⋅ 5月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: -

Pentax K10D

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3872 × 2592 - 10 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Samsung GX-10

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2006
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3872 × 2592 - 10 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K100D Super

APS-C AF digital SLR camera

Announced ⋅ 発表: June ⋅ 六月 2007
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3008 × 2008 - 6 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K200D

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2008
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3872 × 2592 - 10 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K20D

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2008
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.4 × 15.6mm - 1.54x
Resolution ⋅ 解像度: 4672 × 3104 - 15 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Samsung GX-20

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2008
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.4 × 15.6mm - 1.54x
Resolution ⋅ 解像度: 4688 × 3120 - 15 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-m

APS-C AF digital SLR camera

Also known as ⋅ としても知られている: Pentax K2000
Announced ⋅ 発表: September ⋅ 9月 2008
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.7mm - 1.53x
Resolution ⋅ 解像度: 3872 × 2592 - 10 MP
Sensor type ⋅ センサータイプ: CCD
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-7

APS-C AF digital SLR camera

Announced ⋅ 発表: May ⋅ 5月 2009
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.4 × 15.6mm - 1.54x
Resolution ⋅ 解像度: 4672 × 3104 - 15 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-x

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2009
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.6 × 15.8mm - 1.52x
Resolution ⋅ 解像度: 4288 × 2848 - 12 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-5

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2010
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-r

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2010
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.6 × 15.8mm - 1.52x
Resolution ⋅ 解像度: 4288 × 2848 - 12 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-30

APS-C AF digital SLR camera

Announced ⋅ 発表: May ⋅ 5月 2012
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-5 II

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2012
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-5 IIs

APS-C AF digital SLR camera

Announced ⋅ 発表: September ⋅ 9月 2012
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-50

APS-C AF digital SLR camera

Announced ⋅ 発表: June ⋅ 六月 2013
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-500

APS-C AF digital SLR camera

Announced ⋅ 発表: June ⋅ 六月 2013
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.7 × 15.7mm - 1.52x
Resolution ⋅ 解像度: 4928 × 3264 - 16 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-3

APS-C AF digital SLR camera

Announced ⋅ 発表: October ⋅ 10月 2013
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 6016 × 4000 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-S1

APS-C AF digital SLR camera

Announced ⋅ 発表: August ⋅ 8月 2014
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 5472 × 3648 - 20 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-S2

APS-C AF digital SLR camera

Announced ⋅ 発表: February ⋅ 2月 2015
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 5472 × 3648 - 20 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-3 II

APS-C AF digital SLR camera

Announced ⋅ 発表: April ⋅ 4月 2015
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 6016 × 4000 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-70

APS-C AF digital SLR camera

Announced ⋅ 発表: June ⋅ 六月 2016
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 6000 × 4000 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax KP

APS-C AF digital SLR camera

Announced ⋅ 発表: January ⋅ 1月 2017
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.5 × 15.6mm - 1.53x
Resolution ⋅ 解像度: 6016 × 4000 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Pentax K-3 III

APS-C AF digital SLR camera

Announced ⋅ 発表: March ⋅ 行進 2021
Mount ⋅ マウント: Pentax K
Format ⋅ フォーマット: 23.3 × 15.5mm - 1.55x
Resolution ⋅ 解像度: 6192 × 4128 - 26 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Designed for ⋅ のために設計された

Click to expand or collapse section(s)

Features highlight ⋅ 機能のハイライト

APS-C
Constant F/2.8
IF
SDM
QFS
DP/WR
SP
IZ

Specification ⋅ 仕様

Production status and name ⋅ 生産状況と名称
Announced ⋅ 発表: February ⋅ 2月 2007
Production status ⋅ 生産状況: In production ⋅ 生産中
Original name ⋅ 元の名前: SMC PENTAX-DA* 1:2.8 50-135mm ED (IF) SDM
Optical design ⋅ 光学設計
Maximum format ⋅ 最大フォーマット: APS-C
Mount ⋅ マウント: Pentax K
Diagonal angle of view ⋅ 対角画角: 31.6°-12° (Pentax K APS-C)
Lens construction ⋅ レンズ構造: 18 elements ⋅ 要素 - 14 groups ⋅ グループ
3 ED
Diaphragm mechanism ⋅ ダイヤフラムメカニズム
Diaphragm control system ⋅ ダイヤフラム制御システム: Mechanical ⋅ 機械的
Number of blades ⋅ 絞り羽根の数: 9
Zooming ⋅ ズーミング
Zooming method ⋅ ズーム方法: Rotary ⋅ ロータリー
Zoom type ⋅ ズームタイプ: Internal zooming ⋅ 内部ズーム
Focusing ⋅ フォーカシング
Closest focusing distance ⋅ 最短撮影距離: 1m
Maximum magnification ratio ⋅ 最大倍率: 1:5.88 @ 135mm at the closest focusing distance ⋅ 最寄りの距離で
Focusing method ⋅ フォーカシング方法: Internal focusing (IF) ⋅ 内部フォーカシング
Focusing modes ⋅ フォーカシングモード: Autofocus, manual focus ⋅ オートフォーカス、マニュアルフォーカス
Manual focus control ⋅ マニュアルフォーカス制御: Focusing ring ⋅ フォーカシングリング
Autofocus motor ⋅ オートフォーカスモーター: Supersonic Drive Motor
Focus mode selector ⋅ フォーカスモードセレクター: AF/MF
Quick-Shift Focus System (QFS): Yes ⋅ はい
Image stabilizer ⋅ 手ぶれ補正
Shake Reduction (SR): -
Physical characteristics ⋅ 体格的特徴
Weight ⋅ 重量: 685g
Maximum diameter x Length ⋅ 最大直径x長さ: ⌀76.5×136mm
Weather sealing ⋅ ウェザーシーリング: Dust-proof and water-resistant barrel ⋅ 防塵・防水バレル
Super Protect (SP) coating: Front element ⋅ フロントエレメント
Accessories ⋅ 付属品
Filters ⋅ フィルタ: Screw-type ⋅ ネジ式 67mm
Lens hood ⋅ レンズフード: Bayonet-type ⋅ バヨネットタイプ PH-RBK (petal-shaped ⋅ 花びらの形, with filter access window ⋅ フィルタアクセスウィンドウ付き)
  • Toggle description in Japanese

    メーカーの説明

    美しい階調と立体感の描写がきわだつ望遠ズーム。

    なめらかなグラデーションの背景に、狙った被写体が立体的に浮かび上がる描写。 ディテールまで色のにじみが少なく、シャープに描ききる表現力。 F2.8の大口径とコンパクトな操作性を併せ持つ、デジタル時代のスターレンズです。

    超音波モーターを内蔵(SDM機構)

    コンパクトな超音波モーターによるAF機構(SDM機構)を内蔵。 ブレーキ機能を備えるため、速度制御や位置制御がしやすく、スムーズで高品位なAF作動を実現しています。SDM対応のデジタル一眼レフに装着すると、自動的にSDM機構によるAFに切り替わります。また、SDM非対応のデジタル一眼レフの場合は、ボディ内モーターによるAF作動に対応します。

    35ミリ判換算76.5~207mm相当の画角

    約2.7倍のズーム比を持つ望遠ズーム。風景やポートレートのほか、スポーツなどの機動的な撮影にも対応します。

    F2.8の大口径

    全ズーム域でF2.8の明るさをもち、豊かなボケ 味の表現や、高速シャッターによるチャンスのキャッチを可能にします。コンパクトな機動性も持ち味。

    ED(特殊低分散)

    ED(特殊低分散)ガラスのレンズを3枚使用し、色収差を徹底的に除去。解像度の高いシャープな画質と、色にじみのない美しい色調、リアリティに富んだ描写が特長です。

    IF(インナーフォーカスシステム)

    フォーカシング時に 全長が変わらず、バランスのよい操作性を実現しています。

    防塵・防滴構造

    各部にシーリングを施すことにより、従来のレンズにはなかった防塵・防滴構造にしています。 これにより、レンズ内部に水滴や埃が入りにくくなっています。防塵・防滴ボディのK10Dと組み合わせれば、すぐれた耐候性能をより発揮する事ができます。

    クイックシフト・フォーカス・システム

    AFで合焦後、そのままピントリングを回すと、直ちにマニュアルフォーカスに移行。切り替え操作の手間がなく、スムーズにできます。

    SP(Super Protect)コーティング

    第1レンズ前面に撥水・撥油性のある特殊コーティングを採用。汚れがつきにくく落としやすいので、レンズ面の保護に効果的です。

    ゴーストレスコート

    レンズの内面反射を除去しゴーストの発生を抑えるコーティングを採用。逆光などの悪条件でも、クリアでコントラストの高い画像が得られます。

Manufacturer description #1

For standard to medium long-range applications with the utmost level of sharpness, contrast and overall picture clarity, look no further. This fast lens, designed exclusively for PENTAX digital SLR cameras, is an outstanding combination of quality optical performance and speed. Its state-of-the-art construction provides for a fast aperture through the entire focal length. An additional plus: the inner focusing design maintains the focusing point through the full zoom range. The DA* 50–135 also features the PENTAX SP special coating on the front lens element to protect it effectively against the elements

Manufacturer description #2

Telephoto zoom lens with rich gradations and outstanding three-dimensional feel. This lens enables imaging where the target subject stands out from a background with smooth gradations. Outstanding imaging performance with colors that remain sharp even in the details Star lens series for the digital age combining a large F2.8 aperture and compact ease-of-operation.

This lens features a compact ultrasonic motor for enabling an internal AF mechanism (SDM mechanism). It also includes a brake function to enable easy speed and position control for smooth and precise AF operation. When the lens is attached to an SDM-compatible digital SLR camera, operation automatically switches to the AF by the SDM mechanism. When the lens is attached to a non-SDM-compatible digital SLR camera, AF operation can be performed by the motor in the camera body.

This telephoto zoom lens has a zoom ratio of approximately 2.7X and enables shooting of landscapes, portraits and also sports and other high-mobility shooting.

This lens has a brightness of F2.8 over the entire zoom range for enabling a wide range of out-of-focus (bokeh) effect and capturing just the right moment with the high-speed shutter. The lens also features compact mobility for easy shooting.

Three ED (extra-low dispersion) glass lenses are used for eliminating any chromatic aberration. This enables taking of stunning images at high resolutions, beautiful color gradations with sharp colors, and more lifelike imaging.

The lens length does not change during focusing for easy handling without becoming unbalanced.

The various lens components have been sealed for enabling a dust-resistant and drip-proof construction that was not possible in conventional lenses. This prevents the entry of water and dust into the lens. When combined with the dust-resistant and weather-resistant body of the K10D, this enables superior weather-resistant performance.

If you turn the focus ring after focusing by the AF, focusing instantly switches to the manual focus. This enables smooth focusing operations without the need for a switching operation.

A special coating is used on the front lens for repelling water and oils. This enables any water and oils on the lens to be easily removed for effective protection of the lens surface.

The lens uses a special coating that eliminates inner reflections of the lens to reduce ghosting. This enables the shooting of clear, high-contrast images even under backlighting and other adverse conditions.

From the editor ⋅ 編集者から

The lens is a result of cooperation between Pentax and Tokina companies and known as the Tokina AT-X Pro 535 AF SD 50-135mm F/2.8 DX in the Canon EOS and Nikon F systems.

Typical application ⋅ 典型的なアプリケーション

distant subjects ⋅ 遠方の被写体, distant landscapes with perspective compression effect ⋅ 遠近法による圧縮効果のある遠景, photojournalism, weddings, parties, carnivals, live concerts ⋅ フォトジャーナリズム、結婚式、パーティー、カーニバル、ライブコンサート, sports in good lighting conditions ⋅ 良好な照明条件でのスポーツ, wild nature ⋅ 野生の自然, travel ⋅ トラベル

Lenses with similar focal length range and speed

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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 fast telephoto zooms

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

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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.

Supersonic Drive Motor

AF/MF

AFAutofocus mode.
MFManual focus mode.

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.