» Sigma 50-150mm f/2.8 II EX DC HSM APO lens test
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 The Sigma 50-150mm f/2.8 II, announced in December 2007, is an update to its previous 50-150mm f/2.8. It's hard to tell exactly what has been updated: comparing the specifications of the two lenses, they appear almost exactly identical, except version II seems to have shaved off 8mm from the overall length.
The difference appears to be in the mount options, as Sigma has made HSM-style versions available for the previously unsupported Pentax and Sony lens mounts. This is good and bad news: while the lens will mount on those bodies, if the body only supports mechanical (screw-driven) style focusing, autofocus will be unavailable. Newer Pentax and Sony bodies will support the HSM standard. Read the whole review here. You can buy the lens here
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» Sigma 50mm F1.4 EX DG HSM
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 The Sigma 50mm F1.4 EX DG HSM is a new large aperture, standard prime lens for the latest digital cameras. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override. It effectively becomes an 80mm medium telephoto lens on digital cameras with APS-C size image sensors. Price and availability of the Sigma 50mm F1.4 EX DG HSM to be confirmed. Read the whole article here
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» Sigma 70-300mm Lenses for Nikon
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 Sigma has added a built-in motor to the 70-300mm f/4-5.6 APO DG Macro and 70-300mm f/4-5.6 DG Macro lenses to make them compatible with Nikon DSLRs. The Nikon D40, D40x and D60 cameras cannot fully support the original Nikon lenses, as there is no AF motor built into these cameras, therefore they require a motor built into the lens to achieve autofocus. The inclusion of the built-in motor in these two new lenses allows autofocus with all Nikon cameras. The 70-300mm f/4-5.6 APO DG Macro lens costs GBP199.99, and the 70-300mm f/4-5.6 DG Macro GBP149.99. Read the whole article here
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» New Sigma APO 70-200mm F2.8 II EX DG MACRO HSM lens for Pentax and Sony
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 This large aperture zoom lens has improved optical performance and retains close-up ability with a minimum focusing distance of 100cm/39.4in. SLD (Special Low Dispersion) and ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting. The lens design incorporates an inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. It is possible to attach optional Sigma APO teleconverters. Read the technical data here
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» Sigma announces APO 50-150mm F2.8 II EX DC HSM lens for Pentax and Sony
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 This F2.8 large aperture telephoto zoom lens is designed exclusively for digital SLR cameras with APS-C size sensors and its compact, lightweight body provides freedom of movement and versatility. The super multi-layer coating reduces flare and ghosting and ensures sharp images throughout the entire zoom range. The addition of the optional 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens respectively. Read more here
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» New Sigma 18-125mm F3.8-5.6 DC OS HSM Lens
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 The Sigma Corporation is pleased to announce the new 18-125mm F3.8-5.6 DC OS HSM. This high ratio zoom lens is designed exclusively for digital SLR cameras and will be showcased at PMA, which starts on January 31st, 2008 in Las Vegas, U.S.A.
This compact high zoom ratio lens is designed exclusively for digital SLR cameras and incorporates Sigma’s original OS (Optical Stabilizer) function. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera and works by moving an optical image stabilizing lens group to effectively compensate for camera shake. It offers the use of shutter speeds approximately 4 stops slower. It is the ideal lens for several type of photography such as wide-angle, telephoto and close-up. SLD (Special Low Dispersion) glass, a molded glass aspherical lens and two hybrid aspherical lenses provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. This lens has a minimum focusing distance of 35cm (13.8") at all focal lengths, and has maximum magnification of 1:3.8, making it ideal for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed autofocus. Read technical data after the jump
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» New Sigma APO 70-200mm F2.8 II EX DG MACRO HSM lens for Four Thirds
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 This lens will be showcased at PMA, which starts on January 31st 2008 in Las Vegas, U.S.A. The introduction of this new lens increases our lens line-up for Four Thirds mount to a total of eleven models.
This large aperture thelephoto zoom lens has a minimum focusing distance of 100cm (39.4") and maximum magnification of 1:3.5. Two SLD (Special Low Dispersion) and three ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all types of aberrations. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF and full-time manual focusing capability. An adjustable and removable tripod collar is included as a standard component. Read on for the technical data
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» New Sigma 10-20mm F4-5.6 EX DC HSM lens for Four Thirds
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 This lens will be showcased at PMA, which starts on January 31st 2008 in Las Vegas, U.S.A. The introduction of this new lens increases our lens line-up for Four Thirds mount to a total of eleven models.
This wide-angle zoom lens has an angle of view of 94.5 – 56.8 degrees. It is a very powerful tool for landscape photography and produces striking image with exaggerated perspective. Three SLD (Special Low Dispersion) glass elements and three Aspherical lenses provide optimum image quality throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), ensuring a quiet and high speed AF as well as full-time manual focusing capability. For technical data click here
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» Sigma unveils APO 70-300mm F4-5.6 DG MACRO lens for Nikon
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 The built-in motor allows autofocus with all Nikon digital cameras. These lenses incorporate a macro feature with maximum magnification 1:2 at the 300mm focal length. It is suitable for various types of shooting conditions.
This telephoto zoom lens provides high image quality. It includes a switch for macro photography between 200mm and 300mm and is capable of a maximum magnification of 1:2. Three SLD (Special Low Dispersion) glass elements provide excellent correction of chromatic aberrations. High image quality is assured throughout the entire zoom range. Read the technical data of the lens here
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» Sigma announces APO 120-400mm F4.5-5.6 DG OS HSM lens
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This telephoto zoom lens incorporates Sigma’s original OS (Optical Stabilizer) function. It offers the use of shutter speeds approximately 4 stops slower. Three SLD (Special Low Dispersion) glass elements provide excellent correction for chromatic aberration. This lens is equipped with the rear focus system that minimizes fluctuation of aberration caused by focusing. It provides optimum image quality throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. The minimum focusing distance of 150cm (59.1”) throughout the entire zoom range and has a maximum magnification of 1:4.2 make it useful for close-up photography. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The addition of the optical 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 168-560mm F6.3-8 MF ultra-telephoto zoom lens or a 240-800mm F9-11 MF ultra-telephoto zoom lens respectively. Read the technical data here
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» New Sigma APO 150-500mm F5-6.3 DG OS HSM lens
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This ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows photographers to bring the subject close and short perspective. Sigma’s original OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower. It is ideal for sports, wildlife and landscape photography with handheld shooting. Three SLD (Special Low Dispersion) glass elements provide excellent correction for chromatic aberration. This lens is equipped with a rear focus system that minimizes fluctuation of aberration caused by focusing. The super multi-layer lens coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The addition of the (optional) 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 210-700mm F7-9 MF ultra-telephoto zoom lens or a 300-1000mm F10-13 MF ultra-telephoto zoom lens respectively. A removable tripod socket (TS-31) is included as a standard component. Read the technical data here
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» Sigma's APO 200-500 F2.8 telephoto lens gets close to wildlife
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» NEW Sigma18-200mm f3.5-6.3 DC OS Lens
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 Sigma Corporation is pleased to announce the launch of the new 18-200 F3.5-6.3 DC OS lens.
11.1 high zoom ratio lens is designed exclusively for digital SLR cameras and incorporates Sigma’s original OS (Optical Stabilizer) technology.
This high ratio zoom lens incorporates Sigma’s original OS (Optical Stabilizer) function and exclusively designed for digital SLR cameras. It is perfectly suitable for low light conditions, indoors, at dusk and telephoto range. SLD (Special Low Dispersion) glass and aspherical glass provide excellent correction for all types of aberrations. This lens has a minimum focusing distance of 45cm (17.7”) throughout the entire zoom range and has a maximum magnification of 1:3.9. The inner focusing system is suitable for using a petal-type lens hood supplied and also circular polarizing filters. Read the whole article here
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» New Sigma APO 50-150mm F2.8 II EX DC HSM lens
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 This large aperture telephoto zoom lens is designed exclusively for digital SLR cameras with APS-C size sensors and its compact, lightweight body provides freedom of movement and versatility. The minimum focusing distance of 100cm/39.4in. and the high-resolution power layout have improved the strength of the lens in close-up photography. This lens offers a large aperture of F2.8 and its large depth of field offers greater freedom of creative expression. It has a maximum aperture of F2.8. Four SLD glass elements are used for maximum correction of chromatic aberrations. The super multi-layer lens coating reduce flare and ghosting and ensure sharp images throughout the entire zoom range. The lens design incorporates an inner focusing and inner zooming system. As the overall length of the lens does not change during focusing and zooming, convenient handling is ensured. The HSM (Hyper Sonic Motor) system allows quiet and high-speed auto focusing with full time manual focus override by just rotating the focusing ring. The addition of the optional 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens respectively. Read the technical specifications here
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» Sigma APO 70-200mm F2.8 II EX DG MACRO HSM
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This large aperture zoom lens has improved optical performance and retains close-up ability with a minimum focusing distance of 100cm/39.4in and maximum magnification ration of 1:3.5. This lens is suitable for taking all type of subjects such as portraits, landscape, and close-up pictures. Two SLD (Special Low Dispersion) and three ELD (Extraordinary Low Dispersion) glass elements provide excellent correction for all types of aberrations. High image quality is assured throughout the entire zoom range. The super multi-layer coating reduces flare and ghosting. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focusing capability. The lens design incorporates an inner focusing and inner zooming systems. The overall length of the lens does not change during focusing and zooming, ensuring convenient handling. A removable tripod collar (TS-21) is included as a standard component.
When this lens is used with the optional 1.4x EX DG APO or 2x EX DG APO Tele Converters, it becomes a 98-280mm F4 AF telephoto zoom lens or a 140-400mm F5.6 AF telephoto zoom lens respectively. Read the technical specifications here
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» Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM
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This autofocus circular fisheye lens has an angle of view of 180 degrees in all directions. It is exclusively designed for digital SLR cameras with the APS-C size image sensor. When used in conjunction with digital SLRs with APS-C size image sensors, it produces circular image within the frame.
The F2.8 large aperture value produces a bright image in the viewfinder and allows photographers to take pictures in low light conditions, making it an ideal lens for Astrophotography and Aurora photography. Due to the quantifiable angle/area relationship it produces, this lens can be used for scientific and arts applications such as solid angle measurements of cloud distribution over the sky or vegetation distribution of the forest. Read the whole article here
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» Sigma 10mm F2.8 EX DC Fisheye HSM lens
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This autofocus fisheye lens is designed for use with digital SLR cameras equipped with APS-C size image sensors. The Nikon version produces a diagonal angle of view of 180degrees（154 for Sigma, 167 for Canon）. The diagonal field of view of this fisheye lens produces striking images with exaggerated perspective and distortion. The minimum focusing distance of 13.5cm/5.3inch, and maximum magnification 1:3.3 allows subjects to be as close as 1.8cm/0.7inch from the lens’ front element. This close focusing capability allows close-up photography and also it is possible to make use of large depth of field that covers wide range of subjects. The Integral hood blocks out extraneous light and the Super Multi-Layer Coating minimizes flare and ghosting, creating superior image quality. The HSM（Hyper Sonic Motor）ensures fast and quiet autofocusing and allows full-time manual focus override by rotation of the focus ring. This lens is supplied with a gelatin filter holder at the rear, allowing the use of gelatin filters. Read the whole article here
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» Sigma Macro HSM lenses for Nikon SLR
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The Sigma Corporation is pleased to announce the launch of the new Sigma 17-70mm F2.8-4.5 DC Macro HSM lens and the Sigma 18-50mm F2.8 EX DC Macro HSM lens, both for Nikon D-SLRs. The Sigma Macro HSM lenses allow autofocus with all Nikon SLR cameras. The HSM is incorporated into the large aperture standard zoom 17-70mm F2.8-4.5 DC Macro lens. This Sigma lens is capable of autofocusing with all Nikon DSLR cameras and has a minimum focusing distance of 20cm (7.9”) and maximum magnification of 1:2.3 enabling close-up photography. A Special Low Dispersion (SLD) glass and Aspherical lens allows a compact construction and high optical performance. Read the whole article here
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» New SIGMA HSM lenses for Nikon (17-70mm f2.8-4.5 DC Macro HSM and 18-50mm f2.8 EX DC Macro HSM)
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Sigma Corporation is pleased to announce the launch of the new 17-70mm F2.8-4.5 DC MACRO HSM for Nikon and 18-50mm F2.8 EX DC MACRO HSM for Nikon. Large aperture standard zoom lens designed specially for digital SLR cameras.
The HSM system has been incorporated into this large aperture standard zoom lens for digital SLR cameras. This lens is capable of autofocusing with all Nikon DSLR cameras (including the D40 and D40x) and has a minimum focusing distance of 20cm (7.9”) and maximum magnification of 1:2.3 enabling close-up photography. A Special Low Dispersion (SLD) lens and Aspherical lens allows a compact construction and high optical performance. Read the whole announcement and the technical details here
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» Sigma 18-50mm f/2.8 EX DC Macro lens test
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With Sigma's new 18-50mm f/2.8 macro ($420, estimated street), we jog past another milestone: This was the industry's first digital-only lens to be released in a secondgeneration version. The closest focusing of any Sigma zoom, this 30-85mm (equivalent, with our test camera's 1.6X lens factor) features a wider barrel and larger filter size, and much closer focusing (from 7.25 inches, rather than 11.25 inches) than the 18-50mm it replaces, at about the same price.
Attractively finished in Sigma's matte-black "Pro" surfacing, the lens offers ribbed and rubberized zoom and manual-focus rings, and is well-marked with easily legible focusing, zoom, and macro scales. Internal focusing with a non-rotating front element, the lens can't be focused manually in AF mode. In MF mode, the action is smooth, but slightly underdamped, while zooming is both well-damped and even. Autofocusing on our test camera (Canon EOS Digital Rebel XTi) was rapid, quiet, and sure. Read the whole test here
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