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Sigma Corporation

Sigma Corporation
Native name
株式会社シグマ
Private KK
Industry Electronics
Founded Setagaya, Japan (September 1961 (1961-09))
Founder Michihiro Yamaki
Headquarters Asao-ku, Kawasaki, Kanagawa 215-8530, Japan
Key people
Kazuto Yamaki
(CEO)
Products
Number of employees
1,135
Subsidiaries Foveon
Website Official website
Footnotes / references
[1][2]

Sigma Corporation (株式会社シグマ Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for producing lenses and other accessories that are compatible with the cameras produced by other companies.[3]

The company was founded in 1961 by Michihiro Yamaki, who was Sigma's CEO until his death at age 78 in 2012.[4]

Sigma products work with cameras from Canon, Nikon, Pentax, Sony, Olympus and Panasonic, as well as their own cameras.

Sigma has also made lenses under the Quantaray name, which have been sold exclusively by Ritz Camera. Similarly, Sigma lenses were sold exclusively by the former Wolf Camera, but following the merger of Wolf and Ritz, both brands can be purchased.

Sigma's digital SLRs, the SD9, SD10, SD14 and SD15 and the latest SD1 are unusual in their use of the Foveon X3 image sensor. All use the SA lens mount. The Sigma DP1 and DP2, high-end compact P&S cameras, also use the Foveon X3 sensor, which gives them a much larger sensor than other cameras of this type.

Sigma is the world's largest independent lens manufacturer and is a family-owned business.[5]

Contents

  • Cameras 1
  • Lenses 2
    • Designations 2.1
    • Zoom lenses 2.2
      • Wide-angle zooms 2.2.1
      • Standard zooms 2.2.2
      • Telephoto zooms 2.2.3
    • Prime lenses 2.3
      • Wide-angle primes 2.3.1
      • Standard primes 2.3.2
      • Macro primes 2.3.3
      • Telephoto primes 2.3.4
    • DC lenses for APS-C 2.4
    • DN lenses for MILC 2.5
  • Lawsuit 3
  • See also 4
  • References 5
  • External links 6

Cameras

Sigma has made a number of film SLR cameras, including the SA-300, SA-5, SA-7 and SA-9. Their latest consumer digital SLR is the SD15. During photokina 2010, Sigma announced their new flagship DSLR camera, the SD1. SD1 features a new 46MP Foveon X3 sensor with 1.5x crop, as opposed to the 1.7x crop of previous models.[6]

All Sigma SLR and DSLR cameras use the Sigma SA mount, which is mechanically similar to the Pentax K mount and electrically an adaptation of the Canon EF lens mount lens control system.

Sigma also produces high-end compact digital cameras, the Sigma DP1, Sigma DP2, and Sigma DP3, through various iterations using APS-C sized sensors similar to those used in the DSLR line. Their 23.5 x 15.7 mm sensors were first based on the Sigma SD-14 DSLR, then the Sigma SD-15, then the Sigma SD1 and Sigma SD1 Merrill.

The current line of Sigma DP compact cameras make use of the Quattro sensor, a variant of the Foveon design using a higher resolution top layer and lower resolution lower layers combined into a final image that is equivalent to a 39 megapixel color filter array image.

The four compact cameras each have a fixed lens - the DP0 with a 14mm f/4 lens, the DP1 with a 19mm f/2.8 lens, the DP2 with a 30mm f/2.8 lens, and the DP3 with a 50mm F/2.8 lens (equivalent to 75mm on a 35mm SLR camera).

Lenses

Sigma makes autofocus lenses for the Sigma SA, Canon EF, Nikon F, Minolta/Sony α, Pentax K and Four Thirds lens mounts. Each lens may not be available in all mounts, and may lack certain features (such as HSM) on certain mounts. There have been some complaints of quality control and assurance issues of lens manufacturing.[7][8]

In August 2013, Sigma announced that starting the following month, it would offer a mount conversion service for its newest "Global Vision" lenses—those with either an "A" (Art), "C" (Contemporary), or "S" (Sport) as part of their model name. For a cost that varies with lens and market—from $80 to $250 in the U.S., not including shipping costs—owners can send their lenses to their local Sigma company, which in turn sends them to Japan for mount replacement, including calibration and optimization for the new camera system. Lenses designed for DSLRs can be converted to Canon EF, Nikon F, Pentax K, Sigma SA, or Sony A mounts; those designed for MILCs can be converted to Micro Four Thirds or Sony E-mount.[9]

Designations

Sigma 200–500mm F2.8 EX DG displayed at the 2008 photokina
  • ASPAspherical lens elements
  • APOApochromatic lens element(s), originally for "Advanced Performance Optics", not necessarily apochromatic
  • OS — In-lens "Optical Stabilization", analogous to Nikon VR or Canon IS
  • HSM — "Hyper-Sonic Motor", either in-lens ultrasonic motor or micro-motor, analogous to Nikon SWM (AF-S) (ultra-sonic or micro-motor), Canon USM (ultrasonic or micro-motor), Minolta/Konica Minolta/Sony SSM (ultrasonic motor) or Sony SAM (micro-motor), etc.
  • A — "Art Series", large aperture prime and zoom lenses, high optical performance. USB dock compatible. Part of 2013 lens lineup restructuring.
  • C — "Contemporary Series", combining optical performance with compactness. USB dock compatible. Part of 2013 lens lineup restructuring.
  • S — "Sports Series", telephoto and super-telephoto lenses. USB dock compatible. Part of 2013 lens lineup restructuring.
  • EX — "Excellence", EX-finish, high performance series.
  • DG — "Digital Grade", coatings optimized for DSLRs, full-frame as well as APS-C, also usable on 35mm film SLRs
Sigma macro, telephoto and wide angle lenses (left to right)
  • DC — "Digital Compact", lenses for DSLRs featuring APS-C size sensors, only
  • DL — "Deluxe", indicates lower-end film era lenses
  • DN — "Digital Neo", lenses for mirrorless interchangeable-lens cameras featuring APS-C and Micro Four Thirds size sensors
  • DF — "Dual Focus", lens features clutch to disengage focus ring when in AF mode
  • FLD — "'F' Low Dispersion" glass, the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass
  • HF — "Helical Focusing", front element of lens does not rotate (useful for polarizing filters and petal lens hoods)
  • RF — "Rear Focusing", lenses employing rear-focusing, no length changes during focussing, no rotating front elements
  • IF — "Inner Focusing", length of lens does not change during focusing, no rotating front elements
  • UC — "Ultra-Compact"

Zoom lenses

Wide-angle zooms

  • /4-5.6 DC HSMf
  • 10–20mm f/4-5.6 EX DC HSM
  • 10–20mm f/3.5 EX DC HSM
  • 12–24mm f/4.5–5.6 EX DG Aspherical HSM
  • 12–24mm f/4.5-5.6 DG Aspherical HSM II
  • 15–30mm f/3.5–4.5 EX DG Aspherical
  • 17–35mm f/2.8–4 EX DG Aspherical HSM
  • 18–35mm f/3.5-4.5 Aspherical
  • 20–40mm f/2.8 EX DG Aspherical
  • 21–35mm f/3.5-4.2
  • /2 DG HSM Artf

Standard zooms

  • 17–50mm f/2.8 EX DC OS HSM
  • 17–70mm f/2.8–4.5 DC MACRO HSM
  • 17–70mm f/2.8-4.0 DC OS MACRO HSM
  • 17–70mm f/2.8-4.0 DC OS MACRO HSM C
  • 18–35mm f/1.8 DC HSM A
  • 18–50mm f/2.8 EX DC
  • /2.8 EX DC MACROf
  • /2.8-4.5 DC OS HSMf
  • 18–50mm f/3.5–5.6 DC
  • 24–60mm f/2.8 EX DG
  • 24–70mm f/2.8 EX DG Macro
  • 24–70mm f/2.8 EX DG HSM
  • 24–70mm f/3.5–5.6 Aspherical HF
  • 24–105mm f/4 DG OS HSM A
  • 24–135mm f/2.8–4.5 Aspherical IF
  • 28–70mm f/2.8 EX DG
  • 28–70mm f/2.8–4 DG
  • 28–70mm f/2.8–4 UC
  • 28–70mm f/3.5–4.5 UC
  • 28–80mm f/3.5-5.6 Aspherical Macro
  • 28–84mm f/3.5–4.5
  • 28–85mm f/3.5–4.5
  • 28–105mm f/2.8–4 DG
  • 28–105mm f/3.8–5.6 Aspherical IF
  • 28–105mm f/4–5.6 UC
  • 28–135mm f/3.8–5.6
  • 28–135mm f/4–5.6
  • 28–200mm f/3.5–5.6 DG Macro
  • 28–200mm f/4–5.6
  • 28–300mm f/3.5–6.3 DG Macro
  • 35–70mm f/2.8–4
  • 35–70mm f/3.5–4.5
  • 35–80mm f/4–5.6 DL
  • 35–105mm f/3.5–4.5 Macro
  • 35–135mm f/3.5–4.5
  • 35–135mm f/4–5.6 UC
  • 35–200mm f/4–5.6
  • 39–80mm f/3.5 XQ

Telephoto zooms

  • 50-150mm f/2.8 EX DC HSM
  • 50-150mm f/2.8 EX DC HSM II
  • 50-150mm f/2.8 APO EX DC OS HSM
  • 50–200mm f/3.5-4.5 APO
  • /4–6.3 EX DG HSMf
  • 50–500mm f/4.5-6.3 DG OS HSM
  • 55–200mm f/4–5.6
  • 70–150mm f/3.5
  • 70–200mm f/2.8 EX DG MACRO HSM
  • 70–200mm f/2.8 EX DG HSM
  • 70–200mm f/2.8 EX DG MACRO HSM II
  • /2.8 EX DG APO OS HSMf [10]
  • 70-210mm f/2.8 APO
  • 70–210mm f/3.5–4.5 APO
  • 70-210mm f/4-5.6 UC
  • 70-210mm f/4-5.6 UC-II
  • 70–210mm f/4.5
  • 70–250mm f/3.5-4.5
  • 70–300mm f/4–5.6 DG MACRO
  • /4–5.6 APO DG MACROf
  • 75–200mm f/2.8-3.5
  • 75–200mm f/3.8
  • 75–230mm f/4.5
  • 75–250mm f/4-5
  • 75–300mm f/4.5–5.6 APO
  • 80–200mm f/3.5
  • 80–200mm f/3.5-4.0
  • 80–200mm f/4.5–5.6
  • 80–400mm f/4.5–5.6 EX OS
  • 100–200mm f/4.5
  • 100–300mm f/4 EX DG HSM
  • 100–300mm f/4.5–6.7 DL
  • 100–500mm f/5.6–8 APO Zoom Tau
  • 120–300mm f/2.8 EX HSM
  • 120–300mm f/2.8 EX DG HSM
  • 120–300mm f/2.8 DG OS HSM S
  • 120–300mm f/5.6
  • 120–300mm f/5.6-6.3
  • /4.5–5.6 APO DG OS HSMf
  • 135–400mm f/4.5–5.6 DG
  • 150–500mm f/5–6.3 APO DG OS HSM
  • 150–600mm f/5–6.3 DG OS HSM C
  • 150–600mm f/5–6.3 DG OS HSM S
  • 170–500mm f/5–6.3 DG
  • /5.6) f
  • 300–800mm f/5.6 APO EX DG HSM
  • 350-1200mm f/11 APO

Prime lenses

Wide-angle primes

  • /3.5 EX DG Circular Fisheyef
  • /4 EX DG Circular Fisheyef
  • 12mm f/8 Fisheye Ultra-Wideangle
  • 14mm f/2.8 EX Aspherical HSM
  • 14mm f/3.5
  • 15mm f/2.8 EX DG Diagonal Fisheye
  • 16mm f/2.8 XQ Filtermatic Diagonal Fisheye
  • 18mm f/2.8 Filtermatic
  • 18mm f/3.2 XQ
  • 18mm f/3.5
  • /1.4 DG HSM Artf
  • 20mm f/1.8 EX DG Aspherical RF
  • /1.4 DG HSM Artf
  • /1.8 EX DG Aspherical Macrof
  • 24mm f/2.8 XQ Filtermatic
  • 24mm f/2.8 Aspherical
  • 24mm f/2.8 Super Wide
  • 24mm f/2.8 Super Wide II
  • 28mm f/1.8 Aspherical
  • 28mm f/1.8 EX DG Aspherical Macro
  • 28mm f/2.8 XQ Filtermatic
  • 28mm f/2.8 Mini Wide II
  • /1.4 DG HSM 'A'f
  • 35mm f/2.8 GN (guide number)

Standard primes

  • /1.4 EX DC HSMf (45mm equivalent on most APS-C systems, 48mm equivalent on Canon APS-C, 51mm on Sigma, 60mm on Four Thirds)
  • 30mm f/1.4 DC HSM A (available for Canon, Nikon, and Sigma mounts)
  • /1.4 EX DG HSMf
  • /1.4 DG HSM Af

Macro primes

  • Macro 50mm f/2.8 EX
  • Macro 50mm f/2.8 EX DG
  • Macro 55mm f/2.8 XQ
  • Macro 70mm f/2.8 EX DG
  • Macro 90mm f/2.8
  • Macro 100mm f/2.8 XQ
  • Macro 105mm f2.8 EX
  • /2.8 EX DGf
  • Macro 105mm f/2.8 EX DG OS HSM
  • /2.8 EX DG HSMf
  • APO Macro 150mm f/2.8 EX DG OS HSM
  • APO Macro 180mm f/2.8
  • APO Macro 180mm f/2.8 EX DG OS HSM
  • APO Macro 180mm f/3.5 EX DG IF HSM
  • APO Macro 180mm f/5.6

Telephoto primes

  • 85 mm f/1.4 EX DG HSM [11]
  • 135mm f/1.8 XQ
  • Sigmatel 135mm f/1.8
  • 135mm f/2.5 T-mount
  • 135mm f/2.8
  • 135mm f/3.5
  • 200mm f/2.8 XQ
  • 200mm f/3.5
  • 200mm f/4
  • APO 300mm f/2.8 EX DG HSM
  • APO 300mm f/2.8
  • 300mm f/4 XQ
  • APO 300mm f/4 Macro
  • APO 300mm f/4 HSM Macro
  • APO 300mm f/4.5
  • 300mm f/5.6
  • 400mm f/5.6
  • 400mm f/5.6 Mirror
  • APO 400mm f/5.6
  • APO 400mm f/5.6 Macro
  • APO 400mm f/5.6 HSM Macro
  • 500mm f/4 Mirror-Ultratelephoto
  • APO 500mm f/4.5
  • APO 500mm f/4.5 EX DG HSM
  • APO 500mm f/7.2
  • 500mm f/8 Mirror
  • 600mm f/8 Mirror
  • APO 800mm f/5.6 EX DG HSM
  • APO 1000mm f/8
  • 1000mm f/13.5 Mirror

DC lenses for APS-C

  • 4.5mm f/2.8 EX DC Circular Fisheye HSM
  • /4.5-5.6 DC HSMf
  • /2.8 EX DC Fisheye HSMf
  • /1.4 EX DC HSMf
  • 10–20mm f/3.5 EX DC HSM
  • /4–5.6 EX DC HSMf
  • 17–50mm f/2.8 EX DC OS HSM
  • 17–70mm f/2.8–4.5 DC MACRO HSM
  • 17–70mm f/2.8-4.0 DC OS MACRO HSM
  • 17–70mm f/2.8-4.0 DC OS MACRO HSM 'C'
  • 18–35mm f/1.8 DC HSM A
  • 18–50mm f/2.8 EX DC
  • /2.8 EX DC MACROf
  • /2.8-4.5 DC OS HSMf
  • 18–50mm f/3.5–5.6 DC
  • 18–125mm f/3.5–5.6 DC
  • 18–125mm f/3.8–5.6 DC OS HSM
  • 18–200mm f/3.5–6.3 DC
  • 18–200mm f/3.5–6.3 DC OS (HSM Version for Nikon only)
  • 18–200mm f/3.5-6.3 DC OS HSM II
  • 18–200mm f/3.5-6.3 DC Macro OS HSM C
  • 18–250mm f/3.5–6.3 DC OS HSM
  • 50–150mm f/2.8 EX DC HSM
  • 50–150mm f/2.8 EX DC HSM II
  • 50–150mm f/2.8 EX DC OS HSM
  • 55–200mm f/4–5.6 DC

DN lenses for MILC

  • 19mm f/2.8 EX DN
  • 19mm f/2.8 DN | A
  • 30mm f/2.8 EX DN
  • 30mm f/2.8 DN | A
  • 60mm f/2.8 DN | A

Lawsuit

In 2011, Nikon filed a suit against Sigma, alleging it had violated patents relating to Nikon's "Vibration Reduction" image stabilisation technology.[12] In 2015, the suit ended through settlement, with no details disclosed.[13]

See also

References

  1. ^ "Company Summary". Sigma Corp. Retrieved September 28, 2015. 
  2. ^ "Company Snapshot".  
  3. ^ Werner Publishing (2006), PCPhoto Best Tips & Techniques for Digital Photography,  
  4. ^ "Michihiro Yamaki, Sigma founder and CEO dies: Digital Photography Review".  
  5. ^ "Sigma AF 8-16mm f/4.5-5.6 DC HSM - Lab Test / Review". Photozone.de. May 1, 2010. Retrieved August 29, 2012. 
  6. ^ "Sigma releases SD1 flagship digital SLR". Digital Photography Review. September 21, 2010. Retrieved October 17, 2010. 
  7. ^ "The Sigma Saga". LensRentals.com. September 12, 2008. 
  8. ^ "Lens Repair Data". LensRentals.com. May 17, 2009. 
  9. ^ "Sigma Corporation’s new Mount Conversion Service enables lens use across camera systems" (Press release). Sigma Corp. of America. August 1, 2013. Retrieved August 2, 2013. 
  10. ^ "Sigma launches stabilized 70-200mm F2.8 telezoom". Digital Photography Review. February 20, 2010. Retrieved January 28, 2012. 
  11. ^ "Sigma releases 85mm F1.4 EX DG HSM". Digital Photography Review. February 20, 2010. Retrieved January 28, 2012. 
  12. ^ http://www.dpreview.com/articles/1662465553/nikonsigmadispute
  13. ^ http://www.imaging-resource.com/news/2015/04/21/nikon-and-sigma-reach-settlement-in-os-patent-infringement-case

External links

  • (English) Sigma Corporation
  • (English) Sigma Corporation of America
  • (French) Sigma France
  • (French) List of Sigma lenses + informations
  • (English) Canon EOS Technoclopedia: Sigma AF Lenses for Canon EF - a lens chart with technical data, comments and test references, including discontinued models
  • (English) Review of the Sigma 120–300mm f/2.8 EX DG HSM and 300–800mm f/5.6 EX DG HSM from the Royal Photographic Society Journal
  • (English) (French) The largest database of M42 mount lenses and Pentax K compatible, all Sigma's compatible (more than 5000 models) PhotoPentax.com
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