Zeikos ZE-HLH58 58mm Hard Rubber Lens Hood58mm Hard Lens Hood
Canon EF-S 18-200mm f/3.5-5.6 IS Standard Zoom Lens for Canon DSLR CamerasCompact, lightweight and a wide magnification range - this standard zoom lens features a wide focal length range from normal to telephoto equivalent to 29-320mm in the 35mm format. It features an Optical Image Stabilizer for up to 4-stops of effective correction even at full zoom. Since Canon's optical image stabilization system is in the lens, not in the camera, you can see the stabilized, steadier images through the viewfinder. And the circular aperture can give beautiful background blur effects. This new wide zoom ratio EF-S lens delivers excellent high-speed performance at an affordable price.
Opteka .35x HD² Super Wide Angle Panoramic Macro Fisheye Lens for Canon EOS Digital Rebel XT, XTi, XS, XSi, & T1i Digital SLR CamerasThe new Opteka High Definition² .35x Ultra Wide Angle Fisheye Converter Lens increases the versatility of your existing lens to provide breathtaking ultra wide angle views. And it's so easy to use! Additionally the built-in detachable macro lens allows you to take extreme high resolution close-up shots! Nothing changes the way you see the world like High Definition² and no company does High Definition² like Opteka. Opteka's glass optics define High Definition. Change the way you view the world. Enjoy outstanding detail, enjoy enhanced clarity, enjoy Opteka!
Canon Ef-S Lenses: Canon Ef-S Lens Mount, Canon Ef-S 10-22mm Lens, Canon Ef-S 18-55mm Lens, Canon Ef-S 17-55mm Lens, Canon Ef-S 18-200mm LensPurchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Canon Ef-S Lens Mount, Canon Ef-S 10-22mm Lens, Canon Ef-S 18-55mm Lens, Canon Ef-S 17-55mm Lens, Canon Ef-S 18-200mm Lens, Canon Ef-S 60mm F/2.8 Macro Usm Lens, Canon Ef-S 17-85mm Lens, Canon Ef-S 55-250mm Lens, Canon Ef 28-90mm Lens, Canon Ef-S 15-85mm Lens, Canon Ef-S 18-135mm Lens. Excerpt: The EF-S lens mount is a derivative of the EF lens mount created for a subset of Canon digital single-lens reflex cameras with APS-C sized image sensors. It was released in 2003. Cameras supporting the EF-S mount are backward-compatible with the EF lens mount. Only Canon cameras with the APS-C sized sensor released after 2003 support the mount. All other cameras do not support it. The "S" in EF-S stands for "short back focus", which means that the rear element of the lens is closer to the image sensor than on regular 35 mm SLR cameras. The proximity of the rear element to the image sensor greatly enhances the possibilities for wide angle and very wide angle lenses, enabling them to be made smaller, lighter (containing less glass), faster (larger aperture) and less expensive. Most current Canon EF-S lenses are wide angle. Lenses designed specifically for APS-C sized sensors are often optically designed to provide a narrower light cone to match the sensor. However, not all such lenses require the shorter back focus, and may feature the standard EF mount. Such lenses will give noticeable vignetting if used on a 35mm film or sensor camera. The cameras that can use the EF-S mount are: A EF-S compatible body, the Canon EOS 400D, with open lens mount. A EF-S compatible mount close-up, from the Canon 30D.Canon designers have taken steps to ensure it is physically impossible to mount EF-S lenses on EF-only cameras. This is because the increased proximity of th... More: http://booksllc.net/?id=958511
Canon EF Lens Mount: Bayonet mount, Canon EF- S lens mount, Canon L lens, Canon FD lens mount, Canon Extender EF, Canon EOS 300D, Canon EF- S 18- 200mm ... lens, Autofocus, Canon EF- S 18- 55mm lensThe EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it is a bayonet-style mount, and all communication between camera and lens takes place through electrical contacts; there are no mechanical levers or plungers. In 2003, Canon introduced the EF-S lens mount, a derivative of the EF mount that is strictly for digital EOS cameras with a 1.6x crop released after 2003. EF lenses can be mounted on EF-S bodies, albeit with cropped image, while EF-S lenses cannot be mounted on EF bodies.
