Fujifilm Fujinon XF 35mm F/1.4 R

Standard prime lens • Digital era

XF The lens is designed for Fujifilm APS-C digital mirrorless cameras.
R The lens is equipped with aperture ring.

Sample photos

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F/2.2
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F/4
F/1.4

Sample photos uploaded by users

F/2
F/14
F/6.4
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F/4
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F/4.5
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F/2
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F/1.4
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F/1.6
F/2.2
F/???
F/2
F/5.6
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F/4
F/7.1
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F/2
F/5.6
F/8
F/3.2
F/8
F/7.1
F/3.6
F/7.1
F/5.6
F/9
F/7.1
F/3.6
F/5.6
F/5.6
F/5.6
F/5.6
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F/8
F/5.6

Fujifilm X-Pro1

APS-C AF digital mirrorless camera

Announced: Jan 2012
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: -

Fujifilm X-E1

APS-C AF digital mirrorless camera

Announced: Sep 2012
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: -

Fujifilm X-M1

APS-C AF digital mirrorless camera

Announced: Jun 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: -

Fujifilm X-A1

APS-C AF digital mirrorless camera

Announced: Sep 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-E2

APS-C AF digital mirrorless camera

Announced: Oct 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: -

Fujifilm X-T1

APS-C AF digital mirrorless camera

Announced: Jan 2014
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: -

Fujifilm X-A2

APS-C AF digital mirrorless camera

Announced: Jan 2015
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-T10

APS-C AF digital mirrorless camera

Announced: May 2015
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: -

Fujifilm X-E2S

APS-C AF digital mirrorless camera

Announced: Jan 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: -

Fujifilm X-Pro2

APS-C AF digital mirrorless camera

Announced: Jan 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: -

Fujifilm X-T2

APS-C AF digital mirrorless camera

Announced: Jul 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: -

Fujifilm X-A3

APS-C AF digital mirrorless camera

Announced: Aug 2016
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-A10

APS-C AF digital mirrorless camera

Announced: Dec 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-T20

APS-C AF digital mirrorless camera

Announced: Jan 2017
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: -

Fujifilm X-E3

APS-C AF digital mirrorless camera

Announced: Sep 2017
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: -

Fujifilm X-A20

APS-C AF digital mirrorless camera

Announced: Jan 2018
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-A5

APS-C AF digital mirrorless camera

Announced: Jan 2018
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-H1

APS-C AF digital mirrorless camera

Announced: Feb 2018
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: Yes

Fujifilm X-T100

APS-C AF digital mirrorless camera

Announced: May 2018
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-T3

APS-C AF digital mirrorless camera

Announced: Sep 2018
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: -

Fujifilm X-T30

APS-C AF digital mirrorless camera

Announced: Feb 2019
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: -

Fujifilm X-A7

APS-C AF digital mirrorless camera

Announced: Sep 2019
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-Pro3

APS-C AF digital mirrorless camera

Announced: Oct 2019
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: -

Fujifilm X-T200

APS-C AF digital mirrorless camera

Announced: Jan 2020
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: -

Fujifilm X-T4

APS-C AF digital mirrorless camera

Announced: Feb 2020
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: Yes

Fujifilm X-S10

APS-C AF digital mirrorless camera

Announced: Oct 2020
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: Yes

Fujifilm X-E4

APS-C AF digital mirrorless camera

Announced: Jan 2021
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: -

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
ASPH
MM
Compact

Specification / 仕様

Production status and name / 生産状況と名称
Announced / 発表: January 2012
Production status / 生産状況: In production
Original name / 元の名前: FUJINON ASPHERICAL LENS SUPER EBC f=35mm 1:1.4
Optical design / 光学設計
Maximum format / 最大フォーマット: APS-C
Mount / マウント: Fujifilm X
Diagonal angle of view / 対角画角: 44.2° (Fujifilm X APS-C)
Lens construction / レンズ構造: 8 elements - 6 groups
1 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: 0.8m
0.28m [Macro]
Maximum magnification ratio / 最大倍率: 1:5.88 at the closest focusing distance
Focusing method / フォーカシング方法: Overall linear extension
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: Micromotor
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
Optical Image Stabilizer (OIS): -
Physical characteristics / 体格的特徴
Weight / 重量: 187g
Maximum diameter x Length / 最大直径x長さ: ⌀65×55mm
Weather sealing / ウェザーシーリング: -
Fluorine coating / フッ素コーティング: -
Accessories / 付属品
Filters / フィルタ: Screw-type 52mm
Lens hood / レンズフード: Bayonet-type (rectangular)
  • Toggle description in Japanese

    メーカーの説明

    Xの成長に寄り添い、世界の喜怒哀楽を見つめてきた眼。XFレンズの源流であり、象徴的な存在で、全てのXユーザーが辿り着くところ。写真感の拠り所として、カメラバッグにいつもこのレンズがあった。

    実焦点距離35mmの遠近感と換算焦点距離50mmの画角を併せ持つ、APS-Cフォーマットが生んだハイブリッド。特別でないことを信条にしたレンズは、最も多くの特別な写真を生んできました。

    すべては写真のために。数値やチャートで測定される性能ではなく、写真に奥行きと質感を再現させること。光学の無慈悲なルールに哲学で挑み、解像、ボケ、収差までが、美しく調和しています。

    シャッターと設定変更を担う右手に対して、フォーカスと絞りを左手に与え、電源オフでも視認できるダイヤル中心の操作系がそれを繋ぎます。撮影の肉体性と、想像の精神性が一体になり、撮る喜びへと還元されていくのです。

    全群繰り出しはもっともシンプルなレンズの姿。撮影距離による画質変化は最小限に抑えられ、周辺まで均質な画質と、軟らかく自然なボケが得られます。収差を飼い慣らすことにより、その価値は最大限に高められたのです。

Manufacturer description #1

Mississauga, ON, January 9, 2012 – FUJIFILM Canada Inc. proudly debuts the newest and most advanced addition to its premium, high quality X-Series digital camera line-up – the FUJIFILM X-Pro1 interchangeable lens digital camera system. The X-Pro1 follows in the footsteps of the X100 and X10 with its unique, trendy retro look and high quality finish. [...]

Prime FUJINON XF lenses deliver the highest image quality

FUJINON lenses have long been associated with delivering high quality images, with optics used for both broadcast TV and medium format cameras. Now the expertise borne out of this enviable optical heritage has been put into lenses for the FUJIFILM X-Pro1.

Three compact XF FUJINON fast aperture prime lenses will be available at launch. The XF18mmF2 R (27mm equivalent) f/2.0, XF 35mmF1.4 R (53mm equivalent) f/1.4, and XF60mmF2.4 R Macro (90mm equivalent) F/2.4 are all bright, compact and designed to deliver sharp, clear images of uncompromising quality. They offer precise control over depth-of-field and deliver excellent bokeh effects thanks to the design of the molded aperture diaphragm blades. The blades are curved to create a circular image at all aperture settings, while the very edges of each blade are meticulously rounded off rather than simply cut off, which delivers a sharper image. In addition, the solid feel of the high-quality metal barrel and detailed exposure setting in 1/3 step increments using the aperture ring fuel your desire to capture more photos with every shot.

Manufacturer description #2

Using a glass-molded aspheric lens at the 5th element minimizes spherical aberration. Achieving beautiful bokeh in out-of-focus areas as well as excellent in-focus reproduction to create a natural sense of depth according to the aperture setting and the subject. The 35mm (135 equivalent: 53mm) lens has a standard focal length with the angle of view similar to that of the human eye. With the bright maximum aperture, the lens is ideal for snapshots.

From the editor / 編集者から

One of the oldest lenses in the Fujifilm X system along with the 18/2.8 and 60/2.4 Macro models.

From the interview of senior executives of Fujifilm with dpreview website (July 2016):

Lenses like the 35mm F1.4 and 60mm F2.4 use DC coil motors, and the focusing elements are very heavy. For example the weight of the focusing group in the XF 35mm F1.4 is more than 100g. It’s almost unbelievable compared to most current autofocus lenses. On the other hand, in the XF 18-55mm zoom lens, the weight of the focusing group is only around ten grams.

Because of the weight of these groups in this fast prime lenses, we cannot make them focus faster. But that’s why we’re making new F2 lenses. Our 35mm F1.4 is designed for the best image quality, whereas our 35mm F2 - while we also care about image quality - is designed for fast autofocus and lighter overall weight.

Most autofocus lenses have only one focusing element, but our 35mm F1.4 for example, all of the elements in that lens move [to achieve focus].

Typical application / 典型的なアプリケーション

landscapes, interiors, buildings, cityscapes, portraits, street, travel

Lenses with similar focal length and speed

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Fujifilm Fujinon XC 35mm F/2APS-C 2020 Compare42
Fujifilm Fujinon XF 35mm F/2 R WRAPS-C 2015 Compare41
Tokina atx-m 33mm F/1.4 XAPS-CPro 2020 Compare23

Best fast standard primes

Fujifilm Fujinon XF 35mm F/2 R WRAPS-C 2015 Compare41

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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

One of the best fast standard primes

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

Unable to follow the link

You are already on the page dedicated to this lens.

Cannot perform comparison

Cannot compare the lens to itself.

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

35mm is the classic focal length of moderate wide-angle lenses for 35mm full-frame cameras. Lenses with this focal length are often used as standard lenses, since they allow you to shoot almost the same wide range of scenes as lenses with focal lengths of 50-55mm, while providing a wider field of view. This is facilitated by the high speed, which is often not inferior to standard 50-55mm lenses, as well as, as a rule, compact size and low weight (at least for lenses intended for amateur photographers). In addition, lenses of this class have recently been equipped with optical image stabilization, making them a good choice for casual and travel photography. For comparison: almost all lenses with focal lengths of 50-55mm currently do not have an image stabilizer, although due to the need to use faster shutter speeds at these focal lengths, its presence in lenses of this class would be more justified than in the class of moderate wide-angle lenses.

The background blur provided by moderate wide-angle lenses is not as smooth and pleasing to the eye as with standard 50-55mm lenses, therefore, in the genre of portrait photography, they are usually used only for group portraits.

Micromotor

Aspherical elements

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

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

Low dispersion elements

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

Low dispersion elements

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

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

High-refraction low-dispersion elements

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

High Index, High Dispersion elements

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

Anomalous partial dispersion elements

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

Fluorite elements

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

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

Short-wavelength refractive elements

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

Blue Spectrum Refractive Optics

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

Diffraction elements

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

High refractive index elements

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

Apodization element

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

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

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.