Canon EOS

Canon EOS (Electro-Optical System) is an autofocus single-lens reflex camera (SLR) and mirrorless camera series produced by Canon Inc. Introduced in 1987 with the Canon EOS 650, all EOS cameras used 35 mm film until October 1996 when the EOS IX was released using the new and short-lived APS film. In 2000, the D30 was announced, as the first digital SLR designed and produced entirely by Canon. Since 2005, all newly announced EOS cameras have used digital image sensors rather than film. The EOS line is still in production as Canon's current digital SLR (DSLR) range, and, with the 2012 introduction of the Canon EOS M, Canon's mirrorless interchangeable-lens camera (MILC) system. In 2018 the system was further extended with the introduction of the EOS R camera, Canon's first full frame mirrorless interchangeable lens system.

Logo

The development project was called "EOS" (Electro Optical System). EOS is also the name of the goddess of dawn in Greek mythology, which further signifies the design's generational stature.[1]

The EOS emblem was created using Handel Gothic typography.

It competes primarily with the Nikon F series and its successors, as well as autofocus SLR systems from Olympus Corporation, Pentax, Sony/Minolta, and Panasonic/Leica.[2]

At the heart of the system is the EF lens mount, which replaced the previous FD lens mount, which mainly supported only manual-focus lenses. The EOS R full frame camera introduced a new lens mount to the system – the RF mount.

EF lens mount

Features of EF-lens

The bayonet-style EF lens mount is at the centre of the EOS camera system. Breaking compatibility with the earlier FD mount, it was designed with no mechanical linkages between moving parts in the lens and in the camera. The aperture and focus are controlled via electrical contacts, with motors in the lens itself. This was similar in some ways to Canon's earlier attempt at AF with the T80. Other manufacturers including Contax (with its G series of interchangeable-lens 35 mm rangefinder cameras), Nikon's 1983 F3AF, and Olympus (with its Four Thirds System) have since embraced this type of direct drive system. It is a large lens mount compared to most of its competition, enabling the use of larger aperture lenses.[3]

EOS flash system

A Speedlite 550EX, an early E-TTL flash from 1998

The flash system in the EOS cameras has gone through a number of evolutions since its first implementation. The basic EOS flash system was actually developed not for the first EOS camera, but rather for the last high-end FD-mount manual-focus camera, the T90, launched in 1986. This was the first Canon camera with through-the-lens (TTL) flash metering, although other brands had been metering that way for some time. It also introduced the A-TTL (Advanced TTL) system for better flash exposure in program mode, using infrared preflashes to gauge subject distance.

This system was carried over into the early EOS cameras wholesale. A-TTL largely fell out of favor, and was replaced by E-TTL (Evaluative TTL). This used a pre-flash for advanced metering, and used the autofocus system to judge where the main subject was for more accurate exposure. E-TTL II, which was an enhancement in the camera's firmware only, replaced E-TTL from 2004.

Canon Speedlite-brand flashes have evolved alongside the cameras. They are capable of wired and wireless multi-flash setups, the latter using visible or infrared pulses to synchronise. Later models, including RT in their model name, can also communicate via radio links, where up to 16 units can make up a network. Canon also produces Speedlite accessories, including the OC-E3 Off-Camera Shoe Cord, which can be used to hand-hold the flash while allowing the camera to control it through the cord. The Off-Camera Shoe Cord is popular among portrait photographers who need to have more control over lighting than a camera mounted flash can offer.

EOS cameras

As of 2017, Canon has released no fewer than 70 EOS SLR and DSLR camera models, starting with the introduction of the EOS 650 in 1987. In the 1990s, Canon worked with Kodak to produce digital camera bodies, starting with the EOS DCS 3 in 1995. The first digital EOS SLR camera wholly designed and manufactured by Canon was the EOS D30, released in 2000.

Canon sold two EOS cameras designed to use the APS film format, the EOS IX and the EOS IX Lite.

Canon also sold a manual-focus camera, the Canon EF-M, which used the same EF lens mount as the EOS cameras. It came with all the automatic and manual exposure functions but lacked autofocus. It came equipped with a split-screen/microprism focusing screen for precise manual focusing.

Eye-controlled focusing

Through the tracking of eyeball movements, EOS cameras equipped with eye-controlled focusing (ECF) (some identifiable by the suffix E) were able to select the desired autofocus point in the scene, based on where the user was looking in the viewfinder frame. ECF was especially useful in sports photography where the subject may shift its position in the frame rapidly.

EOS cameras equipped with ECF were the EOS A2E (U.S. model names are shown; see the table below for equivalents in other countries), EOS Elan IIE, EOS IXe, EOS-3, EOS Elan 7E, and EOS Elan 7NE.

Canon did not continue its use of eye-controlled focusing for its digital SLRs. The EOS Elan 7NE was the last EOS camera to have this function, until in 2021 Canon reintroduced eye-controlled focus with the EOS R3.

Quick control dial

Rear view of Canon 60D featuring quick control dial to the right of the LCD screen.

Most prosumer and professional level EOS cameras feature a large quick control dial (QCD) on the camera back. The first consumer-level EOS camera with this feature was the EOS 760D/Rebel T6s, announced in February 2015. This feature allows easy adjustment of certain parameters using the thumb. The QCD is used for quick access to often-used functions that would otherwise require a more complicated procedure of button presses and dial clicks. Settings such as ISO button, Exposure Compensation button, or menus are all easily available through the QCD.[4]

Cameras equipped with the QCD can easily be operated with one hand (forefinger on the main dial, thumb on the QCD) without taking the eye off the viewfinder.

A QCD is programmed to perform useful functions, which may include setting exposure compensation, setting of aperture in manual exposure mode, and scrolling of images and menus in digital EOS cameras.

Multi-point autofocus system

Currently, top-line EOS cameras have either 61 or 65 user-selectable autofocus (AF) points. Autofocus is a camera's ability to focus a lens automatically on an object by pressing down on the shutter button. Autofocus most often chooses the closest image in the field of view to focus on.[4] The following EOS cameras feature such a system, with 61 points unless otherwise indicated:

  • The EOS 5D Mark III, introduced in March 2012.[5]
  • The EOS-1D X, announced in October 2011 and originally scheduled for sale in April 2012,[6] but delayed until June 2012.[7] Since replaced by a Mark II version.
  • The EOS 7D Mark II, on sale since November 2014. This APS-C body has Canon's first (and so far only) 65-point AF system.[8]
  • The EOS 5Ds and 5Ds R, two closely related higher-resolution full-frame bodies otherwise similar to the 5D MkIII, announced in February 2015 with sales beginning in June of that year.[9]
  • The EOS-1D X Mark II, the replacement for the original 1D X, announced in February 2016 with sales expected to begin in April of that year.[10]
  • The EOS 5D Mark IV, announced in August 2016 as the replacement for the 5D Mk III.[11]

The release of the 5D Mark III gave Canon the lead once again in this category; previously, its top-line cameras had 45 AF points,[12] which led the industry until Nikon released its D3 and D300 DSLRs with 51-point AF systems.

A higher number of AF points increases the chances of a sharply focused photograph in situations where the subject travels across the frame at high speeds (e.g. sports, wildlife).

Having so many AF points also helps relieve the photographer from having to use the 'lock focus and recompose' method of framing a photograph that can introduce focusing inaccuracy. The camera generally focuses on the closest object or on human faces, which may not be what the photographer wants, so EOS cameras equipped with a multi-point AF system still allow the photographer to manually select an AF point.

The EOS-3, EOS-1v, all EOS-1D models prior to the EOS-1D X, EOS 80D, EOS 77D, and EOS 800D/Rebel T7i feature a 45-point AF system. Most Canon DSLRs introduced since late 2005, starting from the EOS 20D and the Rebel XTi (400D), feature a nine-point AF system in a diamond-shape formation. The EOS 5D, released in 2005, takes this 9-point AF system a step further by introducing six more 'invisible' AF points (i.e., not user selectable) in helping the camera acquire focus faster during subject tracking. There have been several exceptions to Canon's recent rule of a 9-point AF system. The EOS 1000D (Rebel XS) has the 7-point AF system of most older Canon DSLRs. The EOS 7D, released in 2009, has a 19-point AF layout, fitting essentially within the same diamond-shaped area of the frame as the nine-point layout. The EOS 70D, released in August 2013, inherited the 7D's 19-point layout, but with fewer AF control options. The 70D system was in turn handed down to the EOS 750D (Rebel T6i) and 760D (Rebel T6s), announced in February 2015. As mentioned above, the EOS 5D Mark III, EOS-1D X, EOS 5DS/5DS R, and EOS-1D X Mark II have 61-point AF layouts. The EOS 6D, released in October 2012, has an 11-point layout. The EOS 80D, announced in 2016, marked the return of 45-point AF systems to the Canon EOS line, as well as the first appearance of a 45-point system in a non-professional body. This system was brought downmarket in 2017 with its inclusion in the upper-entry-level EOS 77D and mid-entry-level EOS 800D/Rebel T7i.

For the earlier generation of 45-point AF system, the central column of 1 or 2 sensors (7 in all up to EOS-1Ds Mk II, EOS-1D Mk II N) are cross-type sensors, which are sensitive to both vertical and horizontal lines to offer a high degree of accuracy. The EOS-1Ds Mk III, replaced by the EOS-1D X, has 19 cross-type sensors for higher accuracy, as well as placing the cross-type sensors to complement the Rule of Thirds. The other Canon professional SLR replaced by the EOS-1D X, the APS-H EOS-1D Mk IV, has 39 cross-type sensors, a major increase from the 19 of the Mk III. Of the 61 AF points of the EOS-1D X and 5D MkIII, 21 central points and 20 outer points are cross-type, and five central points are dual-cross-type (sensitive to diagonal lines in addition to horizontal and vertical). All 65 points of the 7D MkII are cross-type, but only the center point is dual-cross-type.

Similarly, as of 2017, all AF points on later generations of the X0D series (beginning with the 40D and continuing through the current 80D) are cross-type sensors for higher accuracy, and the center sensor is dual-cross-type for even greater accuracy and sensitivity. In June 2012, the EOS 650D (Rebel T4i) became the first consumer-level Canon to receive this AF system.

Naming scheme of EOS DSLR and SLR cameras

Identical Canon models are sometimes marketed under different names in different parts of the world. For example, the EOS Rebel 2000 known in the Americas is also known as EOS Kiss III in Japan, and EOS 300 in other parts of the world.

Target market segmentCommon featuresInternationalAmericasJapan
Entry-level[13]/consumer[14]
  • Light polycarbonate body
  • Darker, pentamirror viewfinder
  • Built-in flash
  • Single CF or SD card slot
  • APS-C sensor on digital models
  • 3- or 4-digit model number
  • 3 separate lines:
    • xxxxD: Budget-friendly, lowest-end models
    • 100D, 200D, 250D: Compact DSLRs with simplified controls, slotting in between the other entry models
    • 300D-850D: Regular consumer DSLRs, today serving as the premium entry-level/consumer models
3- or 4-digit model number

E.g., EOS 650D, EOS 300V, EOS 1100D, EOS 100D, EOS 4000D

Rebel (used in North America since 1990)

E.g., EOS Digital Rebel T3, EOS Rebel T4i, EOS Rebel SL1

Kiss (used in Japan since 1993, except for EOS 8000D [760D/Rebel T6s] and 9000D [77D])

E.g., EOS Kiss Digital N, EOS Kiss X6i, EOS Kiss X7

Advanced amateur[15]/midrange[16]
  • The first independent Canon DSLR (EOS D30)
  • The first Canon camera with Dual-Pixel autofocus (EOS 70D)
  • Top LCD
  • More advanced controls
  • Built-in flash
  • Single CF or SD card slot
  • Magnesium alloy body from D30-50D Polycarbonate body on aluminum chassis from 60D
  • Bright pentaprism viewfinder on most models
  • APS-C sensor on digital models
  • Partial weather-sealing
  • 2- or 3-digit model number
  • 2 separate lines:
    • D30, D60, 10D-90D: Regular mid-range line with pentaprism viewfinder
    • 760D, 77D: Cut-down mid-range models with less features and pentamirror viewfinder
2 or 3-digit model number

E.g., EOS 40D , EOS 70D, EOS 760D

Elan

E.g., EOS Elan 7N (DSLRs share the same naming scheme as International)

7-series

E.g., EOS 7s

Prosumer/high-end[17]
  • Durable magnesium-alloy construction
  • Higher grade weather sealing
  • Single CF or SD card slot on older and lower-end models (EOS 5D, 7D, 6D, 6D II) SD and CF card slot on newer, higher-end models (5D II, III, IV, 5DS, 5DS R, 7D II)
  • 1-digit model number
  • APS-C or Full Frame sensor on digital models
  • Built-in flash in APS-C models
  • 3 separate lines:
    • 7D, 7D II: The highest-end Canon APS-C DSLRs with similar features as the higher-end models, but cut-back image quality
    • 6D, 6D II: Canon's cheapest Full Frame DSLR with lower-end features and build quality, but the same image quality as the higher-end models from the same time
    • 5D, II, III, IV: High-end Full Frame DSLRs, and the highest-end without a built-in portrait grip. High quality features and image quality, versatile, suitable for most photographic situations
      • 5DS, 5DS R: Ultra-high resolution versions of 5D Mark III. Made mainly for studio-shooting.
1-digit model number

E.g., EOS 3, EOS 5, 5DS / 5DS R, 5D, 5D Mark II, 5D Mark III, 5D Mark IV, 6D, 6D Mark II, 7D, 7D Mark II

Same as International, except EOS A2 (EOS 5) Same as International
Professional/flagship[18]
  • The most advanced, highest-end Canon DSLR cameras
  • No built-in flash
  • Built-in portrait grip
  • Durable, high-quality build with better weather-sealing
  • APS-H or Full Frame sensor on digital models
  • Single CF card slot on older models (1D and 1Ds). Dual card slot on all other models. (CF + SD on models prior to the 1D X, dual CF on 1D X, CF + CFast on 1D X Mk II)
  • No dedicated mode dial
  • 3 separate lines:
    • 1D, II, III, IV: APS-H sensor DSLRs with high-speed continuous shooting speed and advanced autofocus system. Made mainly for sports shooting. (Discontinued)
    • 1Ds, II, III: Full Frame DSLRs with slower burst rate, but better image quality than the regular 1D series. (Discontinued)
    • 1D X, II, III: Merges the 1Ds and 1D series together; high speed shutter, fast autofocus and full frame sensor with excellent image quality. Advanced video features as well.
      • 1D C: The first DSLR with 4K video recording and more advanced video features (Discontinued)
Model number 1

E.g., EOS-1D Mark II, EOS-1V, EOS-1Ds Mark III, EOS-1D X Mark II

Same as International Same as International

Naming scheme of EOS M Series MILC cameras

Target market segment Common features International Americas Japan
Entry-level
  • The first Canon mirrorless camera (EOS M)
  • Light and compact polycarbonate body
  • Simple ergonomics and features
  • EF-M lens mount
  • APS-C sensor
  • Single SD card slot
  • Built-in flash in most models
  • Hot shoe (except M10 and M100)
  • 2 separate lines:
    • Mx: Regular mirrorless line with hot shoe
    • Mxx, Mxxx: Lower end models without a hot shoe
1, 2 or 3 digit number after the letter M. If the number is not 50 or 5, the camera is in this category.

EOS M,

EOS M2,

EOS M3,

EOS M10, EOS M100

same same
Semi-midrange
  • Built-in electronic viewfinder
  • More advanced features and ergonomics
Number 50 after letter M.

EOS M50, EOS M50 Mark II

same as international EOS Kiss M
Mid-range
  • First Canon mirrorless camera with Dual-Pixel autofocus
  • Aluminium top plate
  • More physical controls
Number 5 or 6 after letter M. This will probably also continue as "Mark II".

The M6 slots below the M5 but the M6 Mark II succeeds both the M5/M6. EOS M5,

EOS M6,

EOS M6 Mark II,

same same

Naming scheme of EOS R Series MILC cameras

Market segment Common features International Americas Japan
Mid-range
  • Polycarbonate body
  • Full frame image sensor
  • RF mount
  • Built-in electronic viewfinder
  • Ergonomics and features similar to lower-end DSLR and mirrorless cameras; image quality similar to higher-end ones
  • No built-in flash
Letter "P" after letter "R".

EOS RP

same same
Prosumer/high-end
  • First Canon mirrorless camera with RF mount and Full Frame sensor (EOS R)
  • Magnesium alloy body
  • Weather sealing
  • Advanced controls and features
  • Higher burst rate
  • Advanced video capabilities
  • In-body image stabilization (except for EOS R)
  • Single card slot in EOS R; Double card slot in R3, R5, and R6
Only a letter "R" or an additional number.

EOS R

EOS R5

EOS R6

EOS R3

same same

Film cameras

This is a list of the 35 mm Film and APS Canon EOS models in order of introduction:

Model (US)Model (Europe)Model (Japan)Release date
EOS 650EOS 650EOS 650March 1987
EOS 620EOS 620EOS 620May 1987
EOS 750EOS 750EOS 750October 1988
EOS 850EOS 850EOS 850October 1988
EOS 630EOS 600EOS 630 QDApril 1989
EOS-1EOS-1EOS-1September 1989
EOS RTEOS RTEOS RTOctober 1989
EOS 10SEOS 10EOS 10 QDMarch 1990
EOS 700EOS 700EOS 700 QDMarch 1990
EOS RebelEOS 1000-October 1990
EOS Rebel SEOS 1000FEOS 1000 QDOctober 1990
EOS 10S commemorative kitEOS 10EOS 10 QDAugust 1991
EOS ElanEOS 100EOS 100 QD/EOS 100 PanoramaAugust 1991
EOS Rebel IIEOS 1000N-March 1992
EOS Rebel SIIEOS 1000FNEOS 1000S QDMarch 1992
EOS A2/A2eEOS 5EOS 5 QDNovember 1992
EOS Rebel XSEOS 500EOS KissSeptember 1993
EOS Rebel XNovember 1993
EOS-1NEOS-1N/1N HS/1N DPEOS-1N/1N HS/1N DPNovember 1994
EOS 5000EOS 888January 1995
EOS-1N RSEOS-1N RSEOS-1N RSMarch 1995
EOS Elan II/IIeEOS 50/50eEOS 55September 1995
EOS Rebel GEOS 500NNew EOS KissSeptember 1996
EOS IXEOS IXEOS IX EOctober 1996
EOS IX LiteEOS IX 7EOS IX 50March 1998
EOS-3EOS-3EOS-3November 1998
EOS 3000EOS 88March 1999
EOS Rebel 2000EOS 300EOS Kiss IIIApril 1999
EOS-1vEOS-1vEOS-1vMarch 2000
EOS Elan 7/7eEOS 33/30EOS 7October 2000
EOS Kiss III LNovember 2001
EOS Rebel XS NEOS 3000NCanon EOS 66February 2002
EOS Rebel TiEOS 300VEOS Kiss 5September 2002
EOS Rebel GIIMarch 2003
EOS Rebel K2EOS 3000VEOS Kiss LiteSeptember 2003
EOS Elan 7N/7NEEOS 33V/30VEOS 7sApril 2004
EOS Rebel T2EOS 300XEOS Kiss 7September 2004

Digital cameras

Canon EOS DCS 3c

Prior to the introduction of the EOS D30 digital SLR, Kodak produced four digital SLRs also sold under the Canon brand. These cameras used a digital camera back with the image sensor and associated electronics designed and built by Kodak together with modified internals of the EOS-1N film SLR. Due to using the Canon EOS body, these four digital SLRs can accept EF lenses. The four cameras were:

ModelRelease date
EOS DCS3July 1995
EOS DCS1December 1995
EOS D2000/Kodak DCS520March 1998
EOS D6000/Kodak DCS560December 1998

After termination of the agreement by Canon, Kodak cooperated with Sigma  who at that time had a Canon license  to produce the Kodak DCS Pro SLR/c based on a SA9 SLR body in 2004, which was compatible with EF lenses.

The following digital SLRs, starting from the D30, had bodies and sensors completely designed and manufactured by Canon (except for the Canon EOS-1D, which uses a Panasonic sourced CCD sensor).

Canon digital SLRs are equipped with a CMOS sensor (with the exception of EOS-1D that uses a CCD sensor). Canon designs and manufactures their own CMOS sensors.

See also

Canon

  • Canon Corporation
  • Canon Cinema EOS
  • Canon FD lens mount
  • Canon FL
  • Canon EF lens mount
  • Canon RF lens mount
  • List of Canon products
  • Canon EF-S lens mount, a derivative of the EF mount designed for DSLRs with APS-C sensors
  • Canon EF-M lens mount, a derivative of the EF mount designed for MILCs with APS-C sensors

Single lens reflex

References

  1. "View by period - 1987-1991 - Canon Camera Museum". global.canon.
  2. "DSLR Worldwide Market Share, 2010". Archived from the original on 26 April 2011. Retrieved 2 May 2011.
  3. "Canon History Hall: Birth of New-Generation Autofocus SLR Camera, "EOS"". Archived from the original on 26 October 2016. Retrieved 26 October 2016.
  4. Brand, Wiley (2014). Canon EOS Rebel T5 For Dummies. Hoboken, New Jersey: John Wiley & Sons, Inc. p. 70. ISBN 978-1-118-93362-6.
  5. "Canon U.S.A. Announces the Highly Anticipated EOS 5D Mark III Digital SLR Camera" (Press release). Canon U.S.A. 2 March 2012. Retrieved 12 May 2017.
  6. "Canon U.S.A. Introduces The New Canon EOS-1D X Digital SLR Camera, Re-Designed From The Inside Out" (Press release). Canon U.S.A. 18 October 2011. Archived from the original on 20 October 2011. Retrieved 18 October 2011.
  7. Carnathan, Bryan (12 April 2012). "Canon Announces Delay of EOS 1D X and EF 24-70mm f/2.8 L II USM Lens". The-Digital-Picture.com. Archived from the original on 20 November 2012. Retrieved 12 April 2012.
  8. "Fuel Your Creative Passion With The Highly Anticipated Canon EOS 7D Mark II Digital SLR Camera" (Press release). Canon U.S.A. 15 September 2014. Retrieved 12 May 2017.
  9. "Canon U.S.A. Introduces The World's Highest Resolution Full-Frame DSLR Cameras: EOS 5DS And EOS 5DS R" (Press release). Canon U.S.A. 5 February 2015. Retrieved 12 May 2017.
  10. "Fast, Formidable, And 4K, All-In-One Camera Canon U.S.A. Introduces The EOS-1D X Mark II Professional Digital Camera" (Press release). Canon U.S.A. 1 February 2016. Archived from the original on 17 October 2016. Retrieved 3 February 2016.
  11. "It's Finally Here: Canon U.S.A. Announces The Highly Anticipated EOS 5D Mark IV DSLR Camera And New L-Series Lenses" (Press release). Canon U.S.A. 15 August 2016. Archived from the original on 16 September 2016. Retrieved 25 September 2016.
  12. "Canon 1D Mark IV". Usa.canon.com. 25 May 2006. Archived from the original on 24 June 2010. Retrieved 30 December 2010.
  13. "CANON U.S.A.'S NEW EOS REBEL XSi PLACES SUPERIOR OPTICS AND PROFESSIONAL FEATURES INTO THE HANDS OF EMERGING PHOTO ENTHUSIASTS". Archived from the original on 23 February 2008. Retrieved 25 February 2008. Canon U.S.A., Inc.'s EOS Rebel series of digital single lens reflex cameras – the cameras that defined and refined what it means to be an "entry level" digital SLR
  14. "EOS 450D: get ready to play". Archived from the original on 29 January 2008. Retrieved 25 February 2008. the model presents consumers with an unprecedented level of image quality
  15. "Canon EOS 40D brings new EOS platform to advanced amateur market". Archived from the original on 12 November 2007. Retrieved 25 February 2008. Canon today introduces its latest digital SLR for advanced amateurs and semi-professionals
  16. "The Wait is Over: CANON U.S.A.'S HIGHLY ANTICIPATED EOS 40D DIGITAL SLR DELIVERS HIGH-RESOLUTION IMAGE QUALITY, HIGH-SPEED SHOOTING AND HIGH-END FUNCTIONALITY". Archived from the original on 18 February 2008. Retrieved 25 February 2008. Building on the success of Canon's perennially popular "prosumer" EOS 20D and 30D models, the EOS 40D advances the state-of-the-art for mid-range Digital SLR cameras
  17. "NEW CANON EOS 5D IS A PREMIUM DIGITAL SLR AT AN AFFORDABLE PRICE OFFERING A FULL-FRAME SENSOR WITH 12.8 MEGAPIXELS OF RESOLUTION". Archived from the original on 18 February 2008. Retrieved 25 February 2008. The New Canon EOS 5D Camera Is a Premium DSLR for Under $3,300
  18. "CANON U.S.A.'s NEW LINE-LEADING, 21.1-MEGAPIXEL, FULL-FRAME EOS-1Ds MARK III DIGITAL SLR KEEPS CANON AT THE TOP OF THE PRO PHOTO CLASS". Archived from the original on 18 February 2008. Retrieved 25 February 2008. While Canon's EOS-1D series has dominated the 35mm-based professional Digital SLR market for the past six years
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