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.
Sigma AF 18 200mm f 3 5 6 3 DC OS Optical Stabilizer Zoom Lens for Canon Digital SLR Cameras
November 26, 2008 by admin · Leave a Comment
Sigma AF 18 200mm f 3 5 6 3 DC OS Optical Stabilizer Zoom Lens for Canon Digital SLR Cameras
The Sigma 18-200 F3.5-6.3 DC OS HSM Lens incorporates an Optical Stabilizer function and is exclusively designed for digital SLR cameras. It is perfectly suitable for low light conditions whether indoors, at dusk, or in telephoto range. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects panning movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. 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. Since the inner focusing system means the front of the lens does not rotate, optional circular polarizing filters and the supplied petal-type hood can easily be used. A magnification scale is displayed on the lens barrel, ensuring ease of use. A zoom-lock switch mechanism is provided to prevent the lens from creeping due to its own weight. 69.3 – 7.1 degrees (Sigma SD format) angle of view 7 Diaphragm Blades F22 Minimum Aperture 45cm / 17.7 Minimum Focusing Distance 1 – 3.9 Maximum Magnification Petal Lens Hood Dimensions – Diameter 79mm x Length 100mm Weight – 21.5 ounces (610 grams)
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 AF 18 200mm f 3 5 6 3 DC OS Optical Stabilizer Zoom Lens for Canon Digital SLR Cameras
November 4, 2008 by admin · Leave a Comment
Sigma AF 18 200mm f 3 5 6 3 DC OS Optical Stabilizer Zoom Lens for Canon Digital SLR Cameras
The Sigma 18-200 F3.5-6.3 DC OS HSM Lens incorporates an Optical Stabilizer function and is exclusively designed for digital SLR cameras. It is perfectly suitable for low light conditions whether indoors, at dusk, or in telephoto range. This system uses two sensors inside the lens to detect vertical and horizontal movement of the camera by moving an optical image stabilizing lens group, to effectively compensate for camera shake. It also automatically detects panning movement of the camera and compensates for camera shake when shooting moving subjects such as motor sports. 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. Since the inner focusing system means the front of the lens does not rotate, optional circular polarizing filters and the supplied petal-type hood can easily be used. A magnification scale is displayed on the lens barrel, ensuring ease of use. A zoom-lock switch mechanism is provided to prevent the lens from creeping due to its own weight. 69.3 – 7.1 degrees (Sigma SD format) angle of view 7 Diaphragm Blades F22 Minimum Aperture 45cm / 17.7 Minimum Focusing Distance 1 – 3.9 Maximum Magnification Petal Lens Hood Dimensions – Diameter 79mm x Length 100mm Weight – 21.5 ounces (610 grams)
Sigma 24 60mm f 2 8 EX DG IF Aspherical Wide Angle Zoom Lens for Nikon SLR Cameras
August 21, 2008 by admin · Leave a Comment
Sigma 24 60mm f 2 8 EX DG IF Aspherical Wide Angle Zoom Lens for Nikon 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.
