Canon SLR Lens Overview - EF-S 17mm - 85mm F-4.0-5.6 USM IS Image Stabilized Autofocus Zoom Lens
Executive Summary about Canon Digital SLR by Silver Leonard
Canon Digital SLR Camera
The EF-S series of lenses, by Canon, are exceptional lenses applicable for Canon digital SLR cameras such as: the EOS 20D and Rebel models. Why? The key design feature aims to match the APS-C imaging sensor with the image circle. How? This matching objective is achieved by reducing distance between the rear of the lens and the focal plane, thus decreasing the size of the image circle.
The result? Canon’s EF-S lenses are more efficient in terms of: weight and cost of wide-angle lenses while ensuring superior image quality, resolution and contrast at all focal lengths.
As a member of the EF-S family of lenses, the 17-85 F4 IS USM is a strong performing wide-angle to telephoto lens. Its list of features include: Image Stabilization for hand-held situations; and is optically optimized for the digital SLR camera; a ring-type USM designed for fast and silent auto focus. The full-time manual focus in AF mode is also a useful addition.
The EF-S 17-85mm f/4-5.6 IS USM lens provides a 5x zoom ratio and an angle of view equivalent to a 27-136mm lens on a 35mm camera. Also present in this lens is a glass-molded aspherical lens element with aspherical surfaces on both sides. The result, superb image quality through the full zoom range. The focusing distance is impressive at a distance of 12 inches at all focal lengths. Finally, the EF-S 17-85mm IS lens, when compared to the EF 28-135mm IS lens, is 5% shorter and 12% lighter, and accepts 67mm filters.
The Best Canon Digital SLR Camera
Executive Summary about Canon Digital SLR by Chris Campbell
Whatever you do, don’t ask a Nikon / Sony / Pentax SLR owner, “Whats the best Canon Digital SLR camera I should buy?”. For first time SLR owners, Canon makes one of the best selling and most critically reviewed entry level SLR cameras ever. I would of course be referring to the Canon Digital Rebel XTi digital SLR camera (~$650). Its predecessor being the Canon Digital Rebel XT (still available ~$450), and it’s successor (recently announced but not yet available), the Canon Digital Rebel XSi (~$800?). For anyone with a somewhat larger budget, the Canon EOS 30D, or the Canon EOS 40D both make excellent choices. Full frame, means that you have an image sensor (CCD), that corresponds with the old 35mm film SLR cameras.
Are You Planning To Buy Sony Or Canon Digital SLR Cameras? Are They Good?
Executive Summary about Canon Digital SLR by Mark Robert
SLR Means Single Lens Reflex. This SLR digital cameras are made from the base design of Konica/Minolta SLR system. This type of Sony cameras are best suited for photographers with autofocus lenses. Different types of SLR cameras
1. Big lenses with big sensor
2. Big lenses with small sensor
3. Small lenses with small sensor
Types of Sony SLR Cameras
The first DSLR in Sony Alpha Series is SOny Alpha A100. Other Features in Sony SLR Cameras
Sony Cyber-shot Cameras
The new sony cyber-shot cameras comes with a high quality 24mm-120mm zoom lens. It also protects lens from dust, scratching or damaging the sensor due to lens changes. Sensor bodies of sony cameras
Usually the sensor bodies of sony cameras are small and hence compatible photos can be taken with the compatible lenses and it also reduces camera shake.
Buying Canon SLR Cameras
Some of the recommended digital SLR cameras are
1. Canon Digital Rebel XTi
Have a look at the prices of the SLR cameras. The prices for digital slr cameras start from range from 800$ to 5000$ which are quite higher.
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