Monthly Archives: July 2010
Canon has posted a firmware update for its EOS 7D digital SLR. Firmware v1.2.2 fixes AF point selection and display bugs occuring under specific shooting conditions, and also addresses an error in movie mode. It also corrects misspellings in the Spanish and Thai language menus. The firmware is available for immediate download from Canon’s website.
Sigma Corporation of America has announced that the Sigma 17-50 F2.8 EX DC OS HSM is now available. The lens, originally announced at the PMA exhibition in February 2010, offers a faster, image stabilized alternative for APS-C users wanting to upgrade from their kit lens. It is now available in Canon mount with Pentax, Sony, Nikon and Sigma-mount versions expected ‘in the coming weeks.’ The lens will sell with a recommended price of $980.
Sigma 17-50mm F2.8 EX DC OS HSM
Sigma Corporation, a leading researcher, developer, manufacturer and service provider of some of the world’s most impressive lines of lenses, cameras and flashes, is pleased to announce the release of its new 17-50mm F2.8 EX DC OS HSM lens.
This large-aperture, standard-zoom lens, which was first introduced in February at Photo Marketing Association International, is designed for small chip, APS-C digital cameras and incorporates Sigma’s Optical Stabilization (OS) functionality and new, FLD glass. The 17-50mm F2.8 EX DC OS HSM is an ultra compact lens with an overall length of just 3.6 inches.
The 17-50mm F2.8 EX DC OS HSM covers a focal length from a 17mm wide angle, has a minimum focusing distance of 11 inches throughout the entire zoom range and a maximum magnification ratio of 1:5. The lens is currently available in Canon mounts at all authorized Sigma dealers for the MSRP of $980, and it will be available in Nikon, Sigma, Sony and Pentax mounts in the coming weeks.
The OS function offers the use of shutter speeds approximately four stops slower than would otherwise be possible. Only Sigma has made it possible for Pentax and Sony shooters to utilize an anti-shake system in either the lens or the camera body. The compensation for camera shake is visible in the view finder for all mounts, which makes accurate focusing fast and easy.
“This lens is a must-have for any photo opportunity,” said Mark Amir-Hamzeh, general manager of Sigma Corporation of America. “The fast aperture allows for shooting in low, existing light or at maximum range with a flash. This is an ideal, all-purpose lens for everyday shooting.”
Sigma’s FLD glass, which is used in the new lens, has an extremely high light transmission and anomalous dispersion, making it the top level of low dispersion glass available. With a performance equal to fluorite glass, this optical glass has a low refractive index and low dispersion compared to current optical glass. These characteristics offer excellent correction for residual chromatic aberration (secondary spectrum), which cannot be corrected by ordinary optical glass and ensures high-definition and high-contrast images.
In addition, the 17-50mm F2.8 EX DC OS HSM also offers one hybrid aspherical lens and two glass mold elements for excellent correction of distortion and astigmatism. It has Super Multi-Layer Coating to reduce flare and ghosting with superior peripheral brightness and Hyper Sonic Motor (HSM) to provide quiet and high-speed auto focus, as well as full-time manual focus capability. The lens’ rounded, seven-blade diaphragm creates an attractive blur to out-of-focus areas and its inner focusing system eliminates front lens rotation, making the lens particularly suitable for use with the supplied petal-type lens hood and circular polarizing filters.
Read more @ dpreview
Canon has released firmware updates for its EOS-1D Mark IV and EOS Rebel T2i/550D digital SLRs. Firmware v1.0.8 for both cameras fixes a bug in the movie mode. The update for the EOS 1D Mark IV also corrects misspellings in the French and Spanish language menus. The latest versions are available for immediate download from Canon’s website.
Tokina has announced that its 16-28mm F2.8 ultra wide angle zoom lens will be available in Nikon and Canon full-frame mounts. Announced at PMA 2010, the AT-X 16-28 F2.8 PRO FX lens features the company’s newly developed AF system that features a quieter Silent Drive-Module (SD-M) autofocus motor and promises more precise focusing. The weather-sealed lens comes with a fixed lens hood and does not incorporate a filter thread. Priced at ¥123, 900 (~ US $1400) the Nikon mount will start shipping From August 6, 2010 while the Canon version will ship from mid-September.
THK Photo Products, Inc., announces the Tokina AT-X 16-28 AF PRO, 16-28mm f/2.8 AF lens for digital cameras with full frame (FX) sensors.
This new Tokina lens is the first in a new generation of full frame (FX) lenses designed for professional digital SLR cameras like the Canon EOS 5D Mark II and the Nikon D700 and D3x. The 16-28 zoom range gives the professional photographer a super-wide angle of view to get close to subject for dramatic effect or to take in entire scenes.
NEW Silent DC Motor with GMR sensor
The 16-28 f/2.8 uses a newly developed silent DC motor that allows the lens to focus faster and more quietly then previous generations. The DC motor coupled with a new GMR magnetic AF sensor work together to increase AF Speed.
Ashperical and Super-low Dispersion glass elements
A new, 56mm in diameter, large sizes aspherical glass element is incorporated into the front lens group, while there are 2 more aspherical elements in the rear group. 3 SD super-low dispersion glass elements are also incorporated through-out the optical design to reduce chromatic aberration, give maximum resolution, more even brightness and distortion correction.
One-Touch Focus Clutch
Tokina’s exclusive One-touch Focus Clutch Mechanism allows the photographer to switch between AF and MF simply by snapping the focus ring forward for AF and back toward the camera to focus manually. There is no need to change the AF/MF switch on Nikon camera bodies and there is no second AF/MF switch on the lens for Canon, everything is accomplished by the focus ring.
Read more @ dpreview