Canon EOS 1D X

35mm AF digital SLR camera

Specification

Production details:
Announced:October 2011
System: Canon EOS (1987)
Format:
Maximum format:35mm full frame
Imaging sensor:36 × 24mm CMOS sensor
Resolution:5184 × 3456 - 18 MP
Sensor-shift image stabilization:-
Mount and Flange focal distance:Canon EF [44mm]
Shutter:
Type:Focal-plane
Model:Electronically controlled
Speeds:30 - 1/8000 + B
Exposure:
Exposure metering:Through-the-lens (TTL), open-aperture
Exposure modes:Programmed Auto
Aperture-priority Auto
Shutter-priority Auto
Manual
Physical characteristics:
Weight:1530g
Dimensions:158x163.6x82.7mm

Manufacturer description #1

To date, Canon has developed its top-of-the-line digital SLR cameras through the 1Ds series, which delivers exceptionally high image quality, and the 1D series, which achieves superlative high-speed performance. Integrating the strengths of these two series, Canon’s new professional flagship model, the EOS-1D X, brings together the highest levels of image quality and speed performance.

The Canon EOS-1D X incorporates a newly developed approximately 18.1-megapixel 35 mm full-frame CMOS sensor which, in addition to achieving an optimal sensor size and pixel count balance, effectively makes use of Canon’s proprietary semiconductor technologies to ensure low-noise performance. Featuring Dual DIGIC 5+, which comprises two new high-performance DIGIC 5+ image processors—each realizing approximately 17 times the processing power of DIGIC 4— the camera delivers exemplary image quality and speed performance. Compared with the EOS-1D Mark IV’s sensitivity range of ISO100-12800, the EOS-1D X offers a range that has been expanded by two steps, to 100-51200,* for outstanding imaging results with reduced noise, even when shooting indoors and other dimly lit settings.

Combining a 100,000-pixel RGB metering sensor and DIGIC 4 processor, the Canon EOS-1D X’s new AE system, the EOS iSA (Intelligent Subject Analysis) System, is capable of determining not only brightness levels, but also a subject’s face and target color, making possible high-precision exposure control. The newly developed AF system incorporates an AF sensor with a total of 61 autofocus points for improved high-precision subject capture. The sensor includes 21 f/5.6 cross-type sensors, 20 f/4.0 cross-type sensors, and 5 f/2.8 dual cross-type sensors. Equipped with 20 f/4.0 AF points, the new camera offers the same level of precision as the EOS-1D Mark IV at f/2.8. Additionally, working in tandem with the new AE system, the camera’s EOS iTR AF (Intelligent Tracking and Recognition Auto Focus) function is capable of tracking a subject’s face or target color to maintain focus on a moving subject.

The Canon EOS-1D X’s new Dual DIGIC 5+ image processors make possible high-speed continuous shooting of up to approximately 12 frames per second with high-precision AE and AF performance. In the ultra-fast continuous shooting mode, the camera realizes a continuous shooting speed of up to approximately 14 frames per second (mirror remains raised during shooting, JPEG images only).

Manufacturer description #2

LAKE SUCCESS, N.Y., October 18, 2011 – Canon U.S.A., Inc., a leader in digital imaging, is proud to introduce a completely revolutionized EOS-1D series camera, the Canon EOS-1D X Digital SLR camera.* As the new leader in Canon’s arsenal of professional DSLRs, the EOS-1D X will be a high-speed multimedia juggernaut replacing both the EOS-1Ds Mark III and EOS-1D Mark IV models in Canon’s lineup. Enhancing the revolutionary image quality of the EOS-1Ds and speed capabilities of the EOS-1D series, the EOS-1D X DSLR features an 18-megapixel full-frame Canon CMOS sensor, Dual DIGIC 5+ Imaging Processors, 14-bit A/D data conversion and capable of shooting an incredible 12 frames-per-second (fps). Canon’s EOS DSLR cameras and accessories have a long-standing legacy of providing high-quality results to professionals in a wide range of markets, including sports, nature, cinematography, wedding and commercial studios. The addition of this new model will help take this tradition to a whole new level.

The EOS-1D X announcement comes on the heels of Canon’s recent manufacturing milestone with the production of the Company’s 50-millionth EOS-series SLR camera in September of 2011. Furthermore, Canon will achieve yet another milestone at the end of this month producing the 70-millionth EF lens.

“The EOS-1D X represents the re-invention of the EOS-1Ds and EOS-1D series, combining new proprietary Canon technologies with the culmination of customer feedback and requests from the field. We are proud to introduce this camera to the worldwide community of professional photographers and cinematographers with the features and capabilities they need to capture the great moments that display their talent,” stated Yuichi Ishizuka, executive vice president and general manager, Imaging Technologies and Communications Group, Canon U.S.A.

The Camera With Three Brains

The EOS-1D X features three DIGIC processors, including Dual DIGIC 5+ image processors capable of delivering approximately 17 times more processing speed than DIGIC 4, and a dedicated DIGIC 4 for metering and AF control. In conjunction with the newly developed high-performance 18-megapixel full-frame Canon CMOS image sensor, the Dual DIGIC 5+ processors provide high-speed continuous shooting, lower noise, and a significant increase in data processing speed than previous EOS-1D models. This new level of data processing speed allows the EOS-1D X to perform many functions including chromatic aberration correction for various Canon EF lenses in-camera instead of through post-production software. The DIGIC 4 processor utilizes a new 100,000-pixel RGB Metering Sensor for enhanced exposure accuracy with color and face detection, and works together with the camera’s new EOS iTR (Intelligent Tracking and Recognition) AF.

The EOS-1D X employs a completely new imaging sensor, producing the lowest noise of any EOS digital camera to date for stunning portraiture and studio work. The new 18-megapixel full-frame CMOS sensor utilizes large pixels – 1.25 microns larger than those in the EOS-1D Mark IV sensor and .55 microns larger than those in the EOS 5D Mark II sensor – together with gapless microlenses to achieve enhanced light gathering efficiency, higher sensitivity and less noise at the pixel level. The new sensor has improved on the already very high signal-to-noise ratio of sensor output of earlier EOS models for outstanding image quality, even in extremely low light. When combined with the Dual DIGIC 5+ imaging processors the results are stunning. The images produced with the EOS-1D X camera’s new sensor are so clean that files can easily be up-sized if necessary for even the most demanding high-resolution commercial applications. The EOS-1D X will also feature new Ultrasonic Wave Motion Cleaning (UWMC), Canon’s second generation self-cleaning sensor unit, which utilizes carrier wave technology to remove smaller dust particles from the sensor and it includes a new fluorine coating on the infrared absorption glass to help repel dust.

The low-light capability of the EOS-1D X is evident in its incredible ISO range and ability to photograph in extremely low-light conditions. Adjustable from ISO 100 to 51,200 within its standard range, the new model offers a low ISO 50 setting for studio and landscape photography and two high settings of 102,400 at H1 and 204,800 at H2, ideal for law enforcement, government or forensic field applications.

New 61-Point High Density Reticular AF

The EOS-1D X includes a brand new 61-Point High Density Reticular AF, the most sophisticated DSLR AF system Canon has ever released. The 21 focusing points in the central area are standard precision cross-type and effective with maximum apertures as small as f/5.6, depending on the lens in use. The center five points are also high-precision diagonal cross-type points for maximum apertures as small as f/2.8. All 61 points are sensitive to horizontal contrast with maximum apertures as small as f/5.6 and 20 of the outer focusing points function as cross-type points with maximum apertures as small as f/4.0. Other innovations of the new 61-point High Density Reticular AF include expanded AF coverage area, superior focusing precision and low light sensitivity, and greater low-contrast subject detection capability compared to earlier EOS AF systems.

All AF functions now have their own menu tab for quick and easy access (formerly AF custom functions in previous EOS models). A new AF Configuration Tool allows for customized setting of tracking sensitivity, the acceleration and deceleration of tracking subjects, and AF point auto switching, all of which are easily accessed and adjusted via the new AF menu tab. A built-in Feature Guide advises photographers on which settings to use according to subject matter.

Similar to the AF point selection options offered in the EOS 7D Digital SLR camera, the EOS-1D X offers six AF point selection modes: Spot, Single Point, Single Point with surrounding four points, Single Point with surrounding eight points, Zone selection and Automatic AF point selection.

EOS iTR AF: Intelligent Tracking and Recognition Enhances AF Performance

The Canon EOS-1D X features incredible new EOS iTR (Intelligent Tracking and Recognition) AF options ideal for wedding and event photography as well as sports and photojournalism. The default AF mode for the EOS-1D X uses phase detection AF information, while a new second option uses Face Detection technology to track recognized faces in addition to color information, ideal when shooting events such as tennis or dancing where facial recognition of the original subject will help keep that person in focus throughout the scene.

Exposure Control

For the first time in a Canon DSLR camera, a DIGIC processor is used exclusively with the metering sensor for fast, accurate exposure control. The Canon DIGIC 4 processor takes advantage of the EOS-1D X’s 100,000-pixel RGB Metering Sensor and utilizes 252 zones for general metering or 35 zones for low-light metering to help ensure accurate evaluative ambient or flash exposure. The new subject recognition capabilities enhance nearly all of the camera’s automatic functions, helping to adjust exposure, autofocus, Auto Lighting Optimizer and Automatic Picture Style to the scene being captured for enhanced image quality.

Multiple Exposure Modes

The EOS-1D X is the first EOS Digital SLR to feature Multiple Exposure capability. The camera can combine up to nine individual images into a single composite image, with no need for post-processing in a computer. Four different compositing methods are provided for maximum creative control, including Additive, Average, Bright and Dark. Compositing results can be viewed in real time on the camera’s LCD monitor, and there is a one-step Undo command that allows photographers to delete an image and try again if desired. The EOS-1D X’s Multiple Exposure mode even allows photographers to specify a previously captured RAW image as the starting point for a new Multiple Exposure composite image.

Super High Speed Mode

The Canon EOS-1D X camera breaks new ground in the world of digital SLRs, offering a Super High Speed Mode which increases shooting speeds up to 14 fps at full 18-megapixel resolution in JPEG mode*1. The new camera is also capable of shooting RAW, JPEG, or RAW+JPEG at speeds up to 12 fps in One Shot AF or AI Servo AF for enhanced performance in sports photography and other applications requiring high-speed digital capture. This new level of performance is made possible by the combination of the EOS-1D X’s 16-channel readout CMOS sensor, Dual DIGIC 5+ image processors, and a completely new reflex mirror mechanism that has been engineered by Canon to combine high-performance with exceptional precision and reliability.

Enhanced EOS HD Video – New Compressions, Longer Recording

Centered around an all-new full-frame CMOS sensor with larger pixels than those found on the EOS 5D Mark II image sensor, the EOS-1D X utilizes new HD video formats to simplify and speed up post-production work. The two new compression formats offered on the EOS-1D X include intraframe (ALL-i ) compression for an editing-friendly format and interframe (IPB) compression for superior data compression, giving professionals the options they need for their ideal workflow. Answering the requests of cinematographers and filmmakers, the EOS-1D X includes two methods of SMPTE-compliant timecode embedding, Rec Run and Free Run, allowing multiple cameras or separate sound recording to be synced together in post production.

Canon’s all new full-frame CMOS sensor ensures that video footage captured on the EOS-1D X will exhibit less moiré than any previous Canon model, resulting in a significant improvement in HD video quality. A desired feature for many documentary filmmakers using Canon DSLRs was to enable recording beyond the four gigabyte (GB) file capacity and the EOS-1D X is the answer. The new camera features automatic splitting of movie files when a single file exceeds 4GB. The new file splitting function allows for continuous video recording up to 29 minutes and 59 seconds across multiple 4GB files; no frames are dropped and the multiple files can be seamlessly connected in post production, providing filmmakers the recording time they want in the same convenient DSLR form factor. The camera records Full HD at 1920 x 1080 in selectable frame rates of 24p (23.976), 25p, or 30p (29.97); and 720p HD or SD video recording at either 50p or 60p (59.94). SD video can be recorded in either NTSC or PAL standards.

The Canon EOS-1D X also includes manual audio level control, adjustable both before and during movie recording, an automatic setting, or it can be turned off entirely. A wind filter is also included. Sound can be recorded either through the internal monaural microphone or via an optional external microphone through the stereo mic input.

Enhanced Ergonomics & Optimized Design

Photographers familiar with Canon’s EOS 1D-series of cameras will notice the control configuration of the EOS-1D X takes a different approach to button placement. The re-designed exterior and ergonomic button configuration feels comfortable in your right hand, allowing seamless navigation through menu options.

The Live View Button has been conveniently placed near the user’s thumb for one-touch switching between Live View and Viewfinder shooting. The Quick Control Button and menu navigation controls will allow users to change camera settings using only their right hand, for fast, simple one-handed control using their thumb on the scroll wheel. The new multi-controller is positioned by the right hand thumb when the camera is held for vertical shooting and enables the same level of control to camera operators when shooting vertically as they have when shooting horizontally. On the front of the camera are four user assignable function buttons, two for vertical shooting and two for horizontal shooting, allowing customizable button control when shooting in either position. The camera also features a level of weather resistance equivalent to earlier professional models such as the EOS-1D Mark IV.

Canon has answered the request of many professional EOS photographers and incorporated Dual Card Slots into the new EOS-1D X DSLR camera. The dual CF card slots will allow photographers to carry only one memory card format and still achieve instant image back-ups and enhanced storage capacity.

This camera also features a new shutter design with even greater durability and precision. Rated to 400,000 cycles, the new carbon fiber shutter blades are more lightweight and durable, allowing the EOS-1D X to achieve over 100,000 cycles more than the shutter of the EOS-1D Mark IV. A new shutter motion and new motor help further reduce vibration in the camera. The EOS-1D X also features an electronic first curtain, new to the EOS-1D series DSLRs, for minimal in-camera vibration during image capture.

Connectivity

For professional photographers who prefer a wired workflow and transfer system, Canon has included a built-in LAN connection in the EOS-1D X DSLR. The built-in LAN connection features a gigabit Ethernet Jack capable of 1000BASE-T transmission speeds, offering photographers a stable wired connection for ultra-fast data transmission. If the network were to go down, the camera will attempt to resend images until the files are sent. The EOS-1D X also features a direct image transfer function whereby images can be selected for transfer, and only sent once a LAN or USB connection is established.

Accessories

Designed exclusively for the EOS-1D X, the new Canon WFT-E6A Wireless File Transmitter* features wireless LAN support for 802.11n network transfer rates providing users with increased communication speed when compared to previous models. With this new dust and weather resistant model, professionals can synchronize clocks on multiple cameras and use the unit to support linked shooting when utilizing multiple cameras. In addition, Bluetooth-compatible equipment can be easily linked to the device as well.

The EOS-1D X also offers an optional Canon GP-E1 GPS Receiver*, which can be easily integrated into the camera’s body. Powered by the camera, this GPS receiver provides the same weatherproof resistance as the EOS-1D X, even at the connector. With an electronic compass on-board, the GP-E1 will log movement – latitude, longitude, elevation, and the Universal Time Code – and allow viewing of camera movement on a PC after shooting. The receiver will also record camera direction when shooting, even when shooting vertically.

Similar cameras (1)

35mm full frame • Auto focus • Digital • Singe-lens reflex • Canon EF mount

Model Shutter Metering Modes Year
Kodak DCS Pro SLR/c E, 1/6000 TTL • OA PASM 2004
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Chromatic aberration

There are two kinds of chromatic aberration: longitudinal and lateral. Longitudinal chromatic aberration is a variation in location of the image plane with changes in wave lengths. It produces the image point surrounded by different colors which result in a blurred image in black-and-white pictures. Lateral chromatic aberration is a variation in image size or magnification with wave length. This aberration does not appear at axial image points but toward the surrounding area, proportional to the distance from the center of the image field. Stopping down the lens has only a limited effect on these aberrations.

Spherical aberration

Spherical aberration is caused because the lens is round and the film or image sensor is flat. Light entering the edge of the lens is more severely refracted than light entering the center of the lens. This results in a blurred image, and also causes flare (non-image forming internal reflections). Stopping down the lens minimizes spherical aberration and flare, but introduces diffraction.

Astigmatism

Astigmatism in a lens causes a point in the subject to be reproduced as a line in the image. The effect becomes worse towards the corner of the image. Stopping down the lens has very little effect.

Coma

Coma in a lens causes a circular shape in the subject to be reproduced as an oval shape in the image. Stopping down the lens has almost no effect.

Curvature of field

Curvature of field is the inability of a lens to produce a flat image of a flat subject. The image is formed instead on a curved surface. If the center of the image is in focus, the edges are out of focus and vice versa. Stopping down the lens has a limited effect.

Distortion

Distortion is the inability of a lens to capture lines as straight across the entire image area. Barrel distortion causes straight lines at the edges of the frame to bow toward the center of the image, producing a barrel shape. Pincushion distortion causes straight lines at the edges of the frame to curve in toward the lens axis. Distortion, whether barrel or pincushion type, is caused by differences in magnification; stopping down the lens has no effect at all.

The term "distortion" is also sometimes used instead of the term "aberration". In this case, other types of optical aberrations may also be meant, not necessarily geometric distortion.

Diffraction

Classically, light is thought of as always traveling in straight lines, but in reality, light waves tend to bend around nearby barriers, spreading out in the process. This phenomenon is known as diffraction and occurs when a light wave passes by a corner or through an opening. Diffraction plays a paramount role in limiting the resolving power of any lens.

Doublet

Doublet is a lens design comprised of two elements grouped together. Sometimes the two elements are cemented together, and other times they are separated by an air gap. Examples of this type of lens include achromatic close-up lenses.

Dynamic range

Dynamic range is the maximum range of tones, from darkest shadows to brightest highlights, that can be produced by a device or perceived in an image. Also called tonal range.

Resolving power

Resolving power is the ability of a lens, photographic emulsion or imaging sensor to distinguish fine detail. Resolving power is expressed in terms of lines per millimeter that are distinctly recorded in the final image.

Vignetting

Vignetting is the darkening of the corners of an image relative to the center of the image. There are three types of vignetting: optical, mechanical, and natural vignetting.

Optical vignetting is caused by the physical dimensions of a multi-element lens. Rear elements are shaded by elements in front of them, which reduces the effective lens opening for off-axis incident light. The result is a gradual decrease of the light intensity towards the image periphery. Optical vignetting is sensitive to the aperture and can be completely cured by stopping down the lens. Two or three stops are usually sufficient.

Mechanical vignetting occurs when light beams are partially blocked by external objects such as thick or stacked filters, secondary lenses, and improper lens hoods.

Natural vignetting (also known as natural illumination falloff) is not due to the blocking of light rays. The falloff is approximated by the "cosine fourth" law of illumination falloff. Wide-angle rangefinder designs are particularly prone to natural vignetting. Stopping down the lens cannot cure it.

Flare

Bright shapes or lack of contrast caused when light is scattered by the surface of the lens or reflected off the interior surfaces of the lens barrel. This is most often seen when the lens is pointed toward the sun or another bright light source. Flare can be minimized by using anti-reflection coatings, light baffles, or a lens hood.

Ghosting

Glowing patches of light that appear in a photograph due to lens flare.

Retrofocus design

Design with negative lens group(s) positioned in front of the diaphragm and positive lens group(s) positioned at the rear of the diaphragm. This provides a short focal length with a long back focus or lens-to-film distance, allowing for movement of the reflex mirror in SLR cameras. Sometimes called an inverted telephoto lens.

Rectilinear design

Design that does not introduce significant distortion, especially ultra-wide angle lenses that preserve straight lines and do not curve them (unlike a fisheye lens, for instance).

Focus shift

A change in the position of the plane of optimal focus, generally due to a change in focal length when using a zoom lens, and in some lenses, with a change in aperture.

Transmittance

The amount of light that passes through a lens without being either absorbed by the glass or being reflected by glass/air surfaces.

Modulation Transfer Function (MTF)

When optical designers attempt to compare the performance of optical systems, a commonly used measure is the modulation transfer function (MTF).

The components of MTF are:

The MTF of a lens is a measurement of its ability to transfer contrast at a particular resolution from the object to the image. In other words, MTF is a way to incorporate resolution and contrast into a single specification.

Knowing the MTF curves of each photographic lens and camera sensor within a system allows a designer to make the appropriate selection when optimizing for a particular resolution.

Veiling glare

Lens flare that causes loss of contrast over part or all of the image.

Anti-reflection coating

When light enters or exits an uncoated lens approximately 5% of the light is reflected back at each lens-air boundary due to the difference in refractive index. This reflected light causes flare and ghosting, which results in deterioration of image quality. To counter this, a vapor-deposited coating that reduces light reflection is applied to the lens surface. Early coatings consisted of a single thin film with the correct refractive index differences to cancel out reflections. Multi-layer coatings, introduced in the early 1970s, are made up of several such films.

Benefits of anti-reflection coating:

Circular fisheye

Produces a 180° angle of view in all directions (horizontal, vertical and diagonal).

The image circle of the lens is inscribed in the image frame.

Diagonal (full-frame) fisheye

Covers the entire image frame. For this reason diagonal fisheye lenses are often called full-frame fisheyes.

Extension ring

Extension rings can be used singly or in combination to vary the reproduction ratio of lenses. They are mounted between the camera body and the lens. As a rule, the effect becomes stronger the shorter the focal length of the lens in use, and the longer the focal length of the extension ring.

View camera

A large-format camera with a ground-glass viewfinder at the image plane for viewing and focusing. The photographer must stick his head under a cloth hood in order to see the image projected on the ground glass. Because of their 4x5-inch (or larger) negatives, these cameras can produce extremely high-quality results. View cameras also usually support movements.

135 cartridge-loaded film

43.27 24 36
  • Introduced: 1934
  • Frame size: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2
  • Double perforated
  • 8 perforations per frame

120 roll film

71.22 44 56
  • Introduced: 1901
  • Frame size: 56 × 44mm
  • Aspect ratio: 11:14
  • Diagonal: 71.22mm
  • Area: 2464mm2
  • Unperforated

120 roll film

79.2 56 56
  • Introduced: 1901
  • Frame size: 56 × 56mm
  • Aspect ratio: 1:1
  • Diagonal: 79.2mm
  • Area: 3136mm2
  • Unperforated

120 roll film

89.64 56 70
  • Introduced: 1901
  • Frame size: 70 × 56mm
  • Aspect ratio: 5:4
  • Diagonal: 89.64mm
  • Area: 3920mm2
  • Unperforated

220 roll film

71.22 44 56
  • Introduced: 1965
  • Frame size: 56 × 44mm
  • Aspect ratio: 11:14
  • Diagonal: 71.22mm
  • Area: 2464mm2
  • Unperforated
  • Double the length of 120 roll film

220 roll film

79.2 56 56
  • Introduced: 1965
  • Frame size: 56 × 56mm
  • Aspect ratio: 1:1
  • Diagonal: 79.2mm
  • Area: 3136mm2
  • Unperforated
  • Double the length of 120 roll film

220 roll film

89.64 56 70
  • Introduced: 1965
  • Frame size: 70 × 56mm
  • Aspect ratio: 5:4
  • Diagonal: 89.64mm
  • Area: 3920mm2
  • Unperforated
  • Double the length of 120 roll film

Shutter speed ring with "F" setting

The "F" setting disengages the leaf shutter and is set when using only the focal plane shutter in the camera body.

Catch for disengaging cross-coupling

The shutter and diaphragm settings are cross-coupled so that the diaphragm opens to a corresponding degree when faster shutter speeds are selected. The cross-coupling can be disengaged at the press of a catch.

Cross-coupling button

With the cross-coupling button depressed speed/aperture combinations can be altered without changing the Exposure Value setting.

M & X sync

The shutter is fully synchronized for M- and X-settings so that you can work with flash at all shutter speeds.

In M-sync, the shutter closes the flash-firing circuit slightly before it is fully open to catch the flash at maximum intensity. The M-setting is used for Class M flash bulbs.

In X-sync, the flash takes place when the shutter is fully opened. The X-setting is used for electronic flash.

X sync

The shutter is fully synchronized for X-setting so that you can work with flash at all shutter speeds.

In X-sync, the flash takes place when the shutter is fully opened. The X-setting is used for electronic flash.

Unable to follow the link

You are already on the page dedicated to this lens.

Cannot perform comparison

Cannot compare the lens to itself.

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.

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 can also be different.

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

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.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

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. Magnification is expressed as a ratio. 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.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

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.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.