Nikon Nikkor Z 28mm F/2.8 SE

Wide-angle prime lens • Digital era

Z The lens is designed for Nikon Z digital mirrorless cameras.

Nikon Z 6

35mm AF digital mirrorless camera

Announced ⋅ 発表: August ⋅ 8月 2018
Mount ⋅ マウント: Nikon Z
Format ⋅ フォーマット: 35.9 × 23.9mm
Resolution ⋅ 解像度: 6048 × 4024 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Nikon Z 7

35mm AF digital mirrorless camera

Announced ⋅ 発表: August ⋅ 8月 2018
Mount ⋅ マウント: Nikon Z
Format ⋅ フォーマット: 35.9 × 23.9mm
Resolution ⋅ 解像度: 8256 × 5504 - 45 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Nikon Z 5

35mm AF digital mirrorless camera

Announced ⋅ 発表: July ⋅ 7月 2020
Mount ⋅ マウント: Nikon Z
Format ⋅ フォーマット: 35.9 × 23.9mm
Resolution ⋅ 解像度: 6016 × 4016 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Nikon Z 6II

35mm AF digital mirrorless camera

Announced ⋅ 発表: October ⋅ 10月 2020
Mount ⋅ マウント: Nikon Z
Format ⋅ フォーマット: 35.9 × 23.9mm
Resolution ⋅ 解像度: 6048 × 4024 - 24 MP
Sensor type ⋅ センサータイプ: CMOS
Image stabilizer ⋅ 手ぶれ補正: Yes ⋅ はい

Nikon Z 7II

35mm AF digital mirrorless camera

Announced ⋅ 発表: October ⋅ 10月 2020
Mount ⋅ マウント: Nikon Z
Format ⋅ フォーマット: 35.9 × 23.9mm
Resolution ⋅ 解像度: 8256 × 5504 - 45 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

ASPH
IF
STM
Multi-Focus System
Lightweight
Compact
DP/WR

Specification ⋅ 仕様

Production status and name ⋅ 生産状況と名称
Announced ⋅ 発表: June ⋅ 六月 2021
Production status ⋅ 生産状況: In production ⋅ 生産中
Original name ⋅ 元の名前: Nikon NIKKOR Z 28mm 1:2.8 SE
Optical design ⋅ 光学設計
Maximum format ⋅ 最大フォーマット: 35mm full frame ⋅ 35mmフルフレーム
Mount ⋅ マウント: Nikon Z
Diagonal angle of view ⋅ 対角画角: 75.4° (35mm full frame ⋅ 35mmフルフレーム)
53.6° (Nikon Z APS-C)
Lens construction ⋅ レンズ構造: 9 elements ⋅ 要素 - 8 groups ⋅ グループ
2 ASPH
Diaphragm mechanism ⋅ ダイヤフラムメカニズム
Number of blades ⋅ 絞り羽根の数: 7
Focusing ⋅ フォーカシング
Closest focusing distance ⋅ 最短撮影距離: 0.19m
Maximum magnification ratio ⋅ 最大倍率: 1:5 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: Stepping motor (Multi-Focus System)
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 Reduction (VR): -
Physical characteristics ⋅ 体格的特徴
Weight ⋅ 重量: 160g
Maximum diameter x Length ⋅ 最大直径x長さ: ⌀71.5×43mm
Weather sealing ⋅ ウェザーシーリング: Dust-proof and water-resistant barrel ⋅ 防塵・防水バレル
Fluorine coating ⋅ フッ素コーティング: -
Accessories ⋅ 付属品
Filters ⋅ フィルタ: Screw-type ⋅ ネジ式 52mm
Lens hood ⋅ レンズフード: Not available ⋅ 利用不可
  • Toggle description in Japanese

    メーカーの説明

    往年のマニュアルレンズにインスパイアされたクラシカルなデザイン

    フィルム一眼レフカメラ「ニコン FM2」発売当時のNIKKORレンズにインスピレーションを受けた、Z fcと一体化するアイコニックなデザインのSpecial Editionレンズです。主要な表記には当時のNIKKORレンズと同じ書体を用い、さらに、当時の設計図を紐解いて各操作リングのローレットを忠実に再現。また、滑り止めを兼ねた根元形状は当時のマニュアルレンズらしさを表現しています。存在感のあるコントロールリングも特徴的です。

    単焦点ならではのボケ表現が得られる広角28mm

    開放F値2.8の明るさ、柔らかいボケ表現

    開放F値2.8の明るさと浅い被写界深度から生まれる大きく自然なボケを活かして、高画質で捉えた主要被写体を印象的に際立たせることができます。特に至近距離付近からの撮影では、キットズームレンズでは得られない豊かなボケ表現を楽しむことが可能。また、明るいレンズは手持ち撮影時のブレ軽減にも有効な、より速いシャッタースピードを設定できるため、気軽に高画質を活かしたスナップ撮影を楽しめます。

    非球面レンズ(2枚)の採用

    片面または両面に球面でない曲面を持つ非球面レンズは、ディストーション(歪曲収差)や球面収差などさまざまな収差を効果的に補正可能。ディストーションは、被写体がレンズを通して結像する際、像高(画面中心からの距離)によって倍率が異なるために生じる収差(像の歪み)で、レンズ中心周辺から非球面を用いて連続的に屈折力を変化させることで補正できます。また、非球面レンズ1枚で、複数枚の球面レンズに相当する収差補正効果が得られるため、球面レンズに比べてレンズの小型化や軽量化に大きく貢献しています。

    スナップに使いやすい、空間をダイナミックに捉える広角単焦点28mm

    焦点距離28mmは、ワイドな画角とパースペクティブを活かして迫力のある空間表現ができることから、ストリートスナップ撮影者に愛用されている画角。風景や街角の何気ないワンシーンから、カフェなどでのテーブルフォトの撮影まで、多彩なシーンで活躍します。

    ニコンDXフォーマットのZカメラユーザーにも使いやすい焦点距離

    ニコンDXフォーマットのZカメラ装着時には、焦点距離42mm相当(35mm判換算)となり、幅広いシーンで使いやすい標準焦点距離レンズとして活用できます。標準領域のレンズは汎用性が高く、近接での物撮りから、ボケを活かした印象的なポートレート、街角のスナップ撮影まで、多彩な用途で活躍します。

    スナップ撮影に適した高性能

    最短撮影距離0.19mの優れた近距離性能

    最短撮影距離が0.19mと短く、被写体にぐっと近づいて迫力のあるシャープな画像を得られます。日常のスナップや身近な景色も、撮るだけで魅力的な作品へとグレードアップ。主要被写体を大胆に描写したいテーブルフォトはもちろん、背景ボケやパースを活かしたダイナミックな撮影まで、狙いどおりの表現を可能にします。

    シャッターチャンスにすばやく対応できる非沈胴式

    沈胴式ではないため沈胴解除の動作がいらず、突然のシャッターチャンスでも、すぐに撮影することが可能。ベストな瞬間を逃したくないスナップ撮影に有利です。

    非S-Lineレンズで初搭載、近距離光学性能の向上に大きく貢献する「マルチフォーカス方式」

    複数のSTM(ステッピングモーター)の連携で複数のフォーカス群の位置を高い精度で厳密に制御するAF駆動方式です。「マルチフォーカス方式」を採用することで近距離光学性能の向上に大きく貢献し、最短撮影距離0.19mを実現。一般的に収差が発生しやすいとされる至近距離の被写体に対しても、収差の少ない優れた解像力を発揮し、近い距離からでも、画像の最周辺部まで高い結像性能が得られます。また、鏡筒の小型化、高速・高精度なAF制御の実現にも寄与しています。

    防塵・防滴※に配慮した設計

    埃や水滴の侵入を防ぐシーリングをレンズ鏡筒の可動部分をはじめとする随所に施した防塵・防滴※に配慮した設計。天候を気にせず、安心して撮影を楽しめます。

    防塵・防滴に配慮した設計となっておりますが、すべての条件で完全な防塵・防滴を保証するものではありません。

    電磁絞り機構の採用

    駆動機構付き絞り羽根ユニットをレンズ本体に搭載。ボディー側からの電気信号による高精度な絞り制御ができ、連続撮影時も含めて常に安定した露出制御(AE)が可能です。

    動画も快適に撮影できる、使いやすさを追求した高い動画性能

    静止画同様の卓越した解像力や大きく柔らかいボケが得られるだけでなく、動画撮影での使いやすさも追求。高い動画性能を発揮します。AFはさらなる静音化を実現。フォーカスブリージングにも対応しており、絞りやISO感度、露出の滑らかな設定操作ができる「コントロールリング」も搭載しています。

    STM駆動、クリックレスのコントロールリングによる優れた静音性

    AF機構と絞り機構にSTM(ステッピングモーター)を採用し、より一層の静音化を実現。さらに、コントロールリングをクリックレスとすることで動画撮影時の操作音に配慮しており、レンズや絞りの駆動音、コントロールリングの操作音が動画に入り込むのを気にせず撮影できます。

    ピントや明るさがゆっくりと滑らかに変化する映像が得られる高い操作性

    コントロールリングには、カメラから[M/A]※[絞り値][露出補正][ISO感度]のいずれかを割り当て可能です。滑らかな操作感により、動画や静止画の撮影操作がスムーズかつ静粛に行えます。コントロールリングを回転させることで、AF時にはカメラで設定した機能を利用でき、コマンドダイヤルやボタン類の操作音対策を実現。MF時にはマニュアルによるピント合わせができます。

    AF時にコントロールリングの操作でただちにMFに切り換える機能。

    フォーカシング時に画角が変わらない、フォーカスブリージング対応

    動画撮影にも配慮したレンズ設計で、フォーカスを手前から奥、奥から手前に移動させるときに発生する画角変動(フォーカスブリージング)を低減。同一構図でピント位置を移動させる映像表現でも不自然な画角変化がないので、自然な映像が得られます。

    明るさの変化を自然に見せる絞り制御

    滑らかでチラつきにくい絞り制御により、明るさの変化が自然な映像を実現しています。

Manufacturer description #1

June 29, 2021 - TOKYO - Nikon Corporation (Nikon) is pleased to announce the release of the NIKKOR Z 28mm f/2.8 (SE), a compact and lightweight prime lens that is compatible with full-frame (Nikon FX-format) mirrorless cameras for which the Nikon Z mount has been adopted. It is also the kit lens for the Z fc, an APS-C size (Nikon DX-format) mirrorless camera also released today.

The NIKKOR Z 28mm f/2.8 (SE) is a compact and lightweight wide-angle prime lens with a heritage design that matches the Z fc body. When mounted on a DX-format camera, images can be captured at the standard 42 mm (equivalent to 35mm [135] format) angle of view. With a total length of approximately 43 mm and a weight of roughly 160 g, this lens is extremely portable. The NIKKOR Z 28mm f/2.8 (SE) is perfect not only for snapshots that take advantage of the 28 mm wide-angle of view, but also its minimum focus distance of 0.19 m enables close-up photography. It is a fast prime lens that can be easily carried around for everyday snapshots including landscapes, cityscapes, and other subjects.

The "(SE)" in the product name is short for "Special Edition". The lens inherits its design from the classic NIKKOR lenses released around the same time as the Nikon FM2 film SLR camera. With features that faithfully reproduce the designs of that time, such as knurling, as well as a prominent control ring, the NIKKOR Z 28mm f/2.8 (SE) conveys a classic atmosphere that matches the Z fc camera body. Moreover, thanks to its smooth autofocusing and a design with consideration of dust- and drip-resistant performance*, this lens is very easy and reliable to use, even for people who are new to mirrorless cameras.

Paired with the Z fc, the NIKKOR Z 28mm f/2.8 (SE) offers superior functionality when shooting, while also bringing aesthetic enjoyment to its users.

Nikon will continue to pursue a new dimension in optical performance while meeting users' needs, contributing to the development of imaging culture, with the hope of expanding possibilities for imaging expression.

*Thorough dust- and drip-resistance is not guaranteed in all situations or under all conditions.

Primary features:

  • Adoption of a heritage design that matches the Z fc.
  • A compact and lightweight body with a total length of approximately 43 mm and weight of approximately 160 g.
  • The fast f/2.8 maximum aperture reduces the effects of camera shake, even during hand-held shooting.
  • The focal length becomes 42 mm (equivalent to 35mm [135] format) when mounted on a DX-format camera.
  • A minimum focus distance of 0.19 m allows users to get close to their subjects for dynamic photography.
  • The first NIKKOR Z lens that is not part of the S-Line*1 series for which a multi-focusing system*2 has been adopted, realizing natural rendering across the entire shooting range, as well as fast and accurate AF control, while maintaining a smaller body size.
  • Designed with consideration of dust- and drip-resistant performance so that it can be taken anywhere with greater confidence.
  • Functions such as aperture and exposure compensation can be assigned to the control ring.
  • Developed with consideration for video recording with extremely quiet operation, effective focus-breathing compensation, and stable exposure.

*1 The S-Line is a grade of NIKKOR Z lenses that demonstrate outstanding optical performance, adhering to a high standard of design principles and quality control.

*2 Multiple AF drive units work together to control the position of multiple focus lens groups with great precision for superior image formation performance regardless of shooting distance.

Manufacturer description #2

Introducing a special edition, classic designed 28mm prime lens. One of the Z system’s smallest, lightest full-frame primes. Get excellent image quality with its street smart 28mm perspective—42mm on DX cameras (35mm equivalent) and fast f/2.8 max aperture. This is the lens for being spontaneous.

On a DX-format Z camera like the Z fc or Z 50, the NIKKOR Z 28mm f/2.8 (SE) performs like a 42mm (35mm equivalent). That’s a great all-purpose view for videos, snapshots, portraits—just about anything. On a full-frame Z camera, it delivers a classic 28mm view, the perspective of choice for street photography, architecture, interiors and situational portraits.

A shout out to the Nikon lenses of the ‘80s, the NIKKOR Z 28mm f/2.8 (SE) brings a touch of classic style to any Z camera. The unique knurling around the control ring is based on Nikon design drawings from that period—a lovely balance of form and function. The typeface and NIKKOR logo echo the era, completing the classic look.

The NIKKOR Z 28mm f/2.8 (SE) is so compact and lightweight, you’ll forget it’s even there. A classic compact prime, it doesn’t extend or retract, so it’s always ready. Take it wherever you go as your main walk-around lens or as a lightweight second lens.

With a close focusing distance of 0.63 feet (0.19 meters), NIKKOR Z 28mm f/2.8 (SE) rewards you for getting close to your subject. The wide perspective and deep depth of field let you incorporate more background information into your videos and stills.

The larger Z mount draws even more low-light performance from the wide f/2.8 aperture. Capture the mood of dimly lit situations with clarity and sharpness.

A classic 28mm is an outstanding video lens. The NIKKOR Z 28mm f/2.8 (SE) greatly suppresses focus breathing to prevent angle-of-view shifts during recording. Make smooth iris adjustments that create a natural shift in brightness. And all the while, the dual stepping motors are operating in near silence to preserve your audio integrity.

Traditional primes focus by moving one group of lens elements with one motor. The NIKKOR Z 28mm f/2.8 (SE) divides that work between two focus groups and two high-speed, ultra-quiet stepping motors moving in sync with each other—a first for a non S-line Z lens. This multi-focus system focuses faster, but it also reduces distortion at the frame edges and close range scenes.

The smooth control ring can be customized for the way you shoot. Use it for precise manual focusing or to adjust aperture, ISO or exposure compensation.

Manufacturer description #3

A special edition lens featuring an iconic exterior design that is perfect for anyone who is looking for a carry-anywhere, bright prime lens and wants to enjoy high image quality casually.

An advantageous power of expression has been concentrated in the outstandingly light and compact body of this NIKKOR Z prime lens, maximizing the advantages of the Z mount system.

Only approx. 43 mm/1.7 in. in length and approx. 160 g/5.7 oz. in weight, you can take this wide-angle lens anywhere, reliably supporting the capture of everyday snapshots.

Responding immediately to any unexpected shutter opportunities is easy without extending the lens for shooting.

With the maximum aperture of f/2.8, sharp images with minimal blur can be obtained even in low-light situations without increasing ISO sensitivity, ensuring reliable hand-held shooting.

The short minimum focus distance of 0.19 m/0.63 ft enables you to approach a subject more boldly.

The fast aperture also enables capture of images utilizing a shallow depth of field with soft bokeh in the background, especially when shooting subjects at short distances.

The multi-focusing system ensures quiet, fast and accurate AF operation, while also greatly contributing to improved optical performance across the entire shooting range.

Impressive movie performance is realized via the adoption of a variety of features including focus-breathing reduction and stabilized exposure that enable natural and comfortable recording.

A control ring supports superb operability for both stills and movies with the assignment of a function selected from various options and smooth operational feel.

The body is designed carefully considering dust- and drip-resistant performance, for enhanced reliability.

From the editor ⋅ 編集者から

This special edition of Nikkor Z 28/2.8 is retro-styled after Nikon manual focus lenses from the 1970s (f.e., see pre-AI 28/2.8 or AI 28/2.8), but is inferior to them in the strength of the materials used: while the barrels of the old lenses were made of metal, the new Z lens is plastic down to the mount. The lens also lacks a focusing distance scale and a depth-of-field scale, as well as a separate aperture ring. The hood is not available, so you need to be especially careful when there is a bright light source in the frame, even despite the fact that the lens features modern highly efficient anti-reflective coatings.

Although the lens features a number of characteristics typical for professional models (f.e., internal focusing, multi-focus system, weather sealing), the moderate wide angle along with the moderate speed and the lack of a dedicated lens hood do not allow it to be classified as a professional model. As for the retro styling, for some people, the build quality and materials are essential part of the "retro feeling", that's why the painted plastic barrel will disappoint many of them. The only positive thing here is that the extensive use of plastic made it possible to significantly reduce the weight, which makes this lens convenient for casual or travel photography.

Typical application ⋅ 典型的なアプリケーション

landscapes ⋅ 風景, interiors ⋅ インテリア, buildings ⋅ 建物, cityscapes ⋅ 都市の景観, full to mid-body portraits ⋅ フルボディからミッドボディのポートレート, 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, street ⋅ 街, travel ⋅ トラベル

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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 wide-angle prime lenses

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.

Classic focal length

28mm is the classic focal length of wide-angle lenses for 35mm full-frame cameras. The field of view is not as wide as with 24-25mm lenses, but noticeably wider than with 35mm lenses. In general, this is a fairly compromise focal length: lenses with focal lengths of 24-25mm are better suited for shooting architecture, and ultra-high speed is quite rare in this class of lenses. On the other hand, due to the moderate focal length, aberrations are corrected better than in lenses with focal lengths of 24-25mm.

Stepping motor (Multi-Focus System)

The lens incorporates focusing system consisting of two autofocus drive units precisely synchronized to deliver fast and accurate autofocusing.

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.