Sigma 24 60mm f 2 8 EX DG IF Aspherical Wide Angle Zoom Lens for Canon SLR Cameras
December 6, 2008 by admin · Leave a Comment
Sigma 24 60mm f 2 8 EX DG IF Aspherical Wide Angle Zoom Lens for Canon SLR Cameras
The effective arrangement of Special Low Dispersion (SLD) and aspherical glass elements has created a lens of compact dimensions. With an overall length of 84.7mm (3.3in.), it is the smallest lens of this focal range. This lens offers a large aperture of F 2.8 over its entire range of focal lengths, which is ideal for low light situations both indoors and out. It has a large depth of field that offers the photographer greater freedom of expression.By using a new technology and optical design, this lens satisfies the needs of digital photography. Two Special Low Dispersion (SLD) glass elements are provided for effective compensation of color aberration, which is a common problem with wide-angle lenses. Four aspherical lenses, one molded glass type and three hybrid aspherical types, offer excellent correction for distortion as well as all types of aberration. The design concept of this lens is especially suitable for the characteristics of Digital SLR Cameras. New coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance. This lens has excellent correction for “light-fall-off”, which is a common problem of large aperture lenses.The design ensures sufficient illumination of the corners of the image.It is capable of taking pictures with a minimum focusing distance of 38cm (15.0in) at all focal lengths. It is very effective for close-up photography. The high performance inner focus system is particularly suitable for using circular polarizing filters and a petal-type hood as the front of the lens does not rotate.This lens is also equipped with a zoom lock that eliminates “Zoom Creep”. This remarkably compact, high performance zoom lens is ideally suited for traveling.
Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens
November 26, 2008 by admin · Leave a Comment
Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens
The fast, wide-angle to medium telephoto AF-S zoom lens from Nikon is optimized for edge-to-edge sharpness on both the Nikon FX (23.9 x 36mm) and DX-format image sensors, with focus as close as 14.9 inches. Enhanced optical formulas, engineered to produce exceptional sharpness, contrast and color, render outstanding image integrity, while two ED (Extra-low Dispersion) elements and PGM aspherical lenses futher control chromatic aberrations at even the widest aperture settings It has an exclusive Nano Crystal Coat to reduce ghosting and flare for even greater image clarity. The Nikon Silent Wave Motor (SWM) enables ultra high-speed autofocusing with exceptional accuracy and powerful, super-quiet operation, while the Internal Focus (IF) provides fast and quiet auto focusing without changing the length of the lens and M/A Focus Mode switch enables quick response to changing situations between Auto and Manual focus operation. With all these features, as well as an incredible resilience to dust, water and general wear and tear, the Nikon 24-70mmf/2.8G ED Lens is a welcome way to meet your telephotography needs. Internal Focus (IF) provides auto focusing without changing the length of the lens M/A Focus Mode switch enables quick changing between Auto and Manual focus operation.
Sigma 10 20mm f 4 5 6 EX DC HSM Lens for Nikon Digital SLR Cameras
November 23, 2008 by admin · Leave a Comment
Sigma 10 20mm f 4 5 6 EX DC HSM Lens for Nikon Digital SLR Cameras
Sigma provides the new ultra-wide angle zoom lens from 15mm and this lens is the first of its kind in the world. It can be useful for images of landscapes, large buildings, group photographs or even more. The perspective that changes with the angle-of-view gives picture an extraordinary feeling.Delicate compositions can be adjusted by lens zooming and this is helpful for close-up photography. Provides deep depth of field with its short focal length for amazing photographic expressions.This ultra-wide zoom lens covers a large wide-angle range from 15 mm to 30 mm. With a minimum focusing distance of 30 cm(11.8 inches) throughout the entire zoom range, it is an ideal lens for Digital SLR Cameras.It incorporates hybrid aspherical lens in the front lens group to minimize distortion and astigmatism, and molded glass aspherical lens in the rear lens group to minimize spherical aberration. Minimization of the distortion is a most important issue for zoom lens, but Sigma has succeeded, to provide image quality with minimal distortion by employing aspherical lenses.This lens incorporates an internal focusing system, which eliminates front lens rotation. Since focusing do not change its overall length, this lens is easy to hold and use. Also it is allowing the use of a Petal-type Hood.The lens also incorporates Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens.
Sigma 10 20mm f 4 5 6 EX DC HSM Lens for Canon Digital SLR Cameras
November 13, 2008 by admin · Leave a Comment
Sigma 10 20mm f 4 5 6 EX DC HSM Lens for Canon Digital SLR Cameras
10-20mm F4-5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with digital SLR cameras. Wide angle of view (102.4 degrees at 10mm and 63.8 degrees at 20mm) offers the photographer greater freedom of expression. 3 Special Low Dispersion (SLD) glass elements are employed for effective compensation of color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration. This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently. Angle of View – 102.4 – 63.8 degrees 6 Diaphragm Blades Minimum Aperture F22 Minimum Focusing Distance – 24cm/9.4 inches Maximum Magnification – 1 – 6.7 Filter Size – Diameter 77mm Lens Hood Petal Hood Dimensions – Diameter 83.5mm x Length 81mm, 3.3 x 3.2 inches Weight – 470 gram (16.6 ounces)
Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens
November 10, 2008 by admin · Leave a Comment
Nikon 24 70mm f 2 8G ED AF S Nikkor Wide Angle Zoom Lens
Nikon introduces fast, wide-angle to medium telephoto AF-S zoom lens optimized for edge-to-edge sharpness on both the Nikon FX (23.9 x 36mm) and DX-format image sensors. Enhanced optical formulas, engineered to produce exceptional sharpness, contrast and color, render outstanding image integrity. Two ED (Extra-low Dispersion) elements and PGM aspherical lenses control chromatic aberrations while enhancing sharpness and contrast, even at the widest aperture settings.Exclusive Nano Crystal Coat further reduces ghosting and flare for even greater image clarity. Nikon’s Silent Wave Motor (SWM) enables ultra high-speed autofocusing with exceptional accuracy and powerful, super-quiet operation. Internal Focus (IF) provides fast and quiet auto focusing without changing the length of the lens, retaining subject-working distance through the focus range. M/A Focus Mode switch enables quick response to changing situations between Auto and Manual focus operation.
