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 Friday, May 15, 2015
Sigma Tripod Foot TS-81
From Sigma:
We are pleased to announce the availability of TRIPOD SOCKET TS-81 that is the optional lens foot which can be attached to the SIGMA 150-600mm F5-6.3 DG OS HSM | Sports. It is compatible with the Arca Swiss quick release plate and the clamp. The deliberately designed length of its rail provides the flexibility to adjust the center of gravity making it balance perfectly, even while zooming or using accessories, such as a tele converter and battery pack. Consideration has been given to the portability and transportation of the lens when Tripod Socket TS-81 is attached. The lens hood can still be reversed and the lens stored in its original padded case, even with the Tripod Socket TS-81 attached. Incorporated into the Tripod Socket are safety stopper screws to prevent the lens from falling. There are 2 sizes of screw holes, 1/4 and 3/8, making it compatible with tripods other than Arca Swiss, too. When it is compared to the supplied tripod socket, it offers more space between the lens and device, and the change of grip has improved the usage as a handle for carrying.
That last line addresses what I think is a significant design problem with the supplied tripod foot on this lens. While the standard foot is robust and low profile, the second joints of my medium-sized fingers do not fit through the low clearance foot, making it very difficult to carry this lens via the tripod foot. For the same reason, it is also difficult to control the lens by the foot while using a monopod or tripod. While I have not yet used the TS-81, I really like the concept. I previously asked for such a foot as a standard feature.
Note that this is not the announcement of a new product; the TS-81 was already announced. Sigma is saying that it is now available. However, we are not finding it available at retailers, even for preorder. We'll let you know when it shows up.
Post Date: 5/15/2015 2:24:24 PM CT   Posted By: Bryan
 Tuesday, January 29, 2013
Sigma 30mm f/1.4 DC HSM
From Sigma:
The Sigma Corporation is pleased to announce the new Sigma 30mm F1.4 DC HSM, the large-aperture APS-C standard lens.
“SIGMA 30mm F1.4 DC HSM”, the large-aperture standard lens with an angle of view equivalent to 45mm on a 35mm camera, is a superb go-to lens for artistic photography on an APS-C format digital SLR. Offering the bright f/1.4 aperture and an angle of view extremely close to that of human vision, this lens is ideal for many different types of photographic expression.
Featuring an advanced design and the latest manufacturing technologies, SIGMA 30mm F1.4 DC HSM, the large-aperture APS-C format standard lens delivers the highest level of image quality worthy of the Art line. The photographer can leverage the shallow depth of field that creates beautiful bokeh for snap shots, portraits, landscapes, and many different styles of photography.
Sigma pioneered the large-aperture, APS-C format, standard lens category with its 30mm f/1.4 lens in 2005. With new optical configurations of nine elements in eight groups, as well as rounded aperture blades, this updated lens delivers pleasing sharpness and a beautiful bokeh background. Its minimum focusing distance is 11.8 inches and its maximum magnification ratio is 1:6.8. The lens’ optimized power distribution helps to minimize field curvature, prevent a loss of image quality at the edges of photographs and produce outstanding image quality. Its double-aspheric lens minimizes spherical distortion, astigmatism and coma, and its rear focus system prevents focus-dependent variation in aberration. Together, the new optimized auto focus (AF) algorithm and rear focusing system ensure smooth and accurate focusing. The new 30mm f/1.4 is also compatible with Sigma’s new USB Dock, which will enable firmware updates and focusing adjustments, is expected to be available in coming months.
Post Date: 1/29/2013 9:02:51 AM CT   Posted By: Sean
 Friday, July 13, 2012
From Sigma Corporation of America:
Sigma Corporation of America announces pricing and availability for 180mm F2.8 macro lens
Sigma 180mm f/2.8 EX DG OS Macro HSM Lens
World’s first 1:1 180mm F2.8 macro lens arrives in the US in July for street price of $1,699
RONKONKOMA, NY July 13, 2012 – Sigma Corporation, a leading researcher, developer, manufacturer and service provider of some of the world's most impressive lines of lenses, cameras and flashes, has announced that the Sigma APO Macro 180mm F2.8 EX DG OS HSMwill be available in the United States on July 27 for the street price of $1,699.
The new APO Macro 180mm F2.8 EX DG OS HSM lens boasts Sigma’s proprietary Optical Stabilizer (OS) technology and a wide F2.8 aperture to allow faster shutter speeds for narrow depth of field. With the OS feature, the lens offers the use of shutter speeds approximately four stops slower than would otherwise be possible, enabling handheld, close-up photography. Three “F” Low Dispersion (FLD) glass elements, which have a performance equal to fluorite glass, are included to provide excellent correction for color aberrations, and an inner focusing system enables this lens to photograph objects precisely throughout the entire focusing range. Overall length does not change during focusing.
“Macro photography is becoming quite popular and we’ve been growing our lineup of macro lenses as a result,” said Mark Amir-Hamzeh, president of Sigma Corporation of America. “We’re filling a gap in the industry by introducing the world’s first 1:1 180mm F2.8 lens to the market. The Optical Stabilizer technology and the larger focusing distance also provide photographers with more control for highly sensitive subjects that are on the move, like butterflies and insects.”
Equipped with the Super Multi-Layer Coating feature, the APO Macro 180mm F2.8 EX DG OS HSM lens reduces flare and ghosting, and delivers sharp and high contrast images, even in backlit conditions. The incorporation of Sigma’s Hyper Sonic Motor (HSM) ensures quiet and high-speed autofocus, as well as full-time manual focus override capability. The macro lens has a rounded nine-blade diaphragm to create an attractive blur to the image’s out-of-focus areas. At 1:1 magnification, this lens has a focusing distance of 18.5 inches, which is a greater working distance than shorter focal length macro lenses, making it advantageous when taking pictures of highly sensitive subjects. It is also compatible with Sigma’s 1.4x EX DG APO and 2x EX DG APO Tele Converters.
Post Date: 7/13/2012 9:42:21 AM CT   Posted By: Bryan
 Friday, June 15, 2012
The Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens (press release) has been announced.
Sigma has created a special site for the new lens.
Preorder at B&H or Adorama.
Post Date: 6/15/2012 8:50:43 AM CT   Posted By: Bryan
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