The optical system of the new SP AF14mm F/2.8 Aspherical (IF) lens, composed of 14 elements in 12 groups, includes two Hybrid Aspherical lens elements. These large Hybrid Aspheric elements efficiently compensate for aberrations thus achieving flat-field image depiction from corner to corner. With a fast F/2.8 aperture and a sophisticated optical system, photographers can create dynamic photographs that take full advantage of the rectangular characteristics of the lens. more info

The Original Post is Located Here: Tamron SP Autofocus 14mm f/2.8 Aspherical IF Rectilinear

The new zoom lens from Tamron covers everything from the 24mm real wideangle that professionals and serious amateurs demand to 135mm telephoto suitable for portraits-all in one compact package. The first SP lens among Tamron's high power zoom lenses, the lens represents a new concept in high power zoom lenses, achieving outstanding performance characteristics worthy of the name SP (Super Performance). more info

The Original Post is Located Here: Tamron SP Autofocus 24135mm f/3.55.6 AD Aspherical IF

This compact, large and constant F2.8 aperture zoom lens and is ideal for digital SLR cameras. Two SLD elements and four aspherical lenses provide the ultimate correction against distortion as well as all types of aberration, especially spherical aberration. Its advanced optical design ensures high performance throughout the entire zoom range.The use of aspherical lenses in the construction of this lens not only corrects aberrations but also produces a very small and lightweight lens design. Its compact, yet robust, construction has an overall length of 87.2mm (3.4in.), maximum diameter of 74mm (2.9in.), filter size of diameter 67mm and weight of 510g(18.0 ounces). more info

The Original Post is Located Here: Sigma 2870mm f/2.8 EX DG IF Aspherical Lens

Tamron has made this lightweight, compact high power zoom lens available with the Di optical system with improved multi-coating for digital SLR cameras as well as film cameras, further enhancing its ease of use and popularity more info

The Original Post is Located Here: Tamron AF 28200mm F/3.85.6 XR Di Aspherical IF

Maintaining the high performance of the previous model, Tamron's new 28-300mm zoom lens now features Di design, making it the ideal lens for use with both digital and film cameras. The Di design is achieved by applying a new optical design to its coated surfaces, and by further enhancing Tamron's already stringent quality control system. Whether you shoot film or digital, the lens provides high image quality for both platforms. When used with APS-C size digital SLR cameras, the lens provides an angle of view equivalent to approximately 44-465mm, covering the standard to ultra telephoto range with no sacrifice of quality or aperture range.Type of zooming is rotation. more info

The Original Post is Located Here: Tamron AF 28300mm f/3.56.3 XR Di LD Aspherical

The Tamron AF18-250mm F/3.5-6.3 Di-II LD Aspherical (IF) lens is a great addition to any photographers camera bag. This extreme zoom lens has it all, it features aspherical elements for the ultimate in sharpness and contrast. With 13.9X zooming capabilities, this is it if you want only one lens to carry due to it's wide angle to extreme telephoto capabilities. Designed specifically for the APS sensors of todays digital cameras, this lens will deliver spectacular results. Includes a Built In Motor for fast accurate focusing. Backed with a 6 year warranty this also comes with a lens hood specifically designed to reduce glare, but not vignette your precious images. more info

The Original Post is Located Here: Tamron AF 18250mm F/3.56.3 DiII LD Aspherical IF

18-250mm f/3.5-6.3 Di II LD Aspherical (IF) Macro Tamron zoom lens with 35mm equivalent of 28-388mm * compatible only with Canon digital SLR cameras with APS-C (24mm x 16mm or smaller) image sensors -- not compatible with the Canon EOS 5D * advanced optical design with low-dispersion and hybrid aspherical glass elements for superior image quality * internal focusing * zoom lock mechanism to prevent unwanted barrel extension when carrying lens/camera combination * minimum focus distance: 17.7 in. * attachment/filter size: 62mm * more info

The Original Post is Located Here: Tamron AF 18250mm F/3.56.3 DiII LD Aspherical IF

This standard zoom lens has a large aperture of F2.8 at 28mm focal length and yet it is compact and lightweight. This digitally optimized diagonal fisheye lens is equipped with a new multi-layer coating technology that reduces both flare and ghosting. This compact, large aperture zoom lens is ideal for digital and 35mm SLR cameras. more info

The Original Post is Located Here: Sigma 2870mm f/2.84 DG Aspherical Large Aperture Zoom

An upgrade to its predecessor, the 18-50mm F2.8-4.5 DC OS HSM is a lens dedicated to digital SLR cameras with APS-C size image sensors offering a large aperture and Sigma’s Optical Stabilization. Once again, Sigma has also engineered the built-in OS function, an anti-shake system, for Sony and Pentax mount allowing the photographer to see a stabilized image in the viewfinder. The combination of the large aperture of F2.8 and anti-shake function makes capturing exceptional photos in low light achievable, and the wide angle is well suited for indoor photography. Two SLD (Special Low Dispersion) glass elements and three Aspherical lenses provide excellent correction for all types of aberrations. The Super Multi-Layer Coating reduces flare and ghosting. Designed with inner focusing and inner zooming systems, high image quality is assured throughout the entire zoom range. The overall length of the lens does not change during focusing and zooming ensuring convenient handling. This lens has a minimum focusing distance of 11.8 inches (30cm) throughout the entire zoom range and a maximum magnification ratio of 1:4.1. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high speed auto focus. more info

The Original Post is Located Here: Sigma 1850mm f/2.84.5 SLD Aspherical DC Optical Stabilized

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. more info

The Original Post is Located Here: Sigma 2460mm f/2.8 EX DG IF Aspherical Wide