!±8± Sigma 55-200mm f/4-5.6 DC Telephoto Zoom Lens for Canon Digital SLR Cameras

Brand : Sigma | Rate : | Price :
Post Date : Jan 19, 2012 21:34:05 | N/A

Sigma 55-200mm f/4-5.6 DC Telephoto Zoom Lens for Canon Digital SLR Cameras

• Canon EOS mount; telephoto zoom lens
• 4.5x magnification
• 55 to 200 mm focal length
• f/4 maximum aperture
• 43.3-inch minimum focusing distance

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Sigma 55-200mm f/4-5.6 DC Telephoto Zoom Lens for Canon Digital SLR Cameras

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Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens for Canon Digital SLR Cameras

!±8±Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens for Canon Digital SLR Cameras

Brand : Canon
Rate :
Price : $215.57
Post Date : Jan 05, 2012 13:32:06
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This telephoto zoom lens is designed with Canon's Optical Image Stabilizer technology while retaining compactness and lightness, in response to demands of photographers. This high zoom ratio lens is equivalent to a focal length of 88-400mm in the 35mm format (when used on Canon EOS cameras compatible with EF-S lenses), and the image stabilizer effect equivalent to a shutter speed about 4 stops faster than the same size lens without Image Stabilizer. In other words, if the slowest shutter speed you could formerly hold a 250mm lens steadily was 1/250th of a second, with Canon's 4-stop stabilization correction, you could hand-hold at shutter speeds as slow as 1/15th of a second. It also uses a UD-glass lens element to correct chromatic aberration for excellent image quality throughout the zoom range. This new EF-S telephoto lens with great features delivers excellent performance at an affordable price for all photographers.

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Digital Slrs: Why are so many people going to Digital particular Lens Reflex (dSlr) Cameras?

!±8± Digital Slrs: Why are so many people going to Digital particular Lens Reflex (dSlr) Cameras?

As the digital bandwagon makes its way colse to the world, we are looking its tracks touch practically every part of our daily lives. From digital chips in automobiles, coffee makers, telephones, televisions and credit cards, one of the most booming industries the digital era has revolutionized is photography.

While film-based Slrs have been colse to for nearly a century, digital Slrs have only been colse to for about a decade. Once a luxury and strictly for the pro crowd, digital Slrs have evolved into a camera that today is being picked off the shelves by amateurs and advanced hobbyists. This change has been brought on by falling camera prices, good photo potential and increased capabilities of these cameras.

But why Slr?

Today's digital Slrs have the best of both worlds: these cameras can morph from a full hand-operated camera to a point-and-shoot camera with a turn of a dial. They often sport higher mega-pixel image sensors, interchangeable lenses, more on-board functionality, beefier and more durable bodies, faster shutter speeds and instantaneous response from the camera once the shutter button is pressed than thorough point-and-shoot digitals.

If you're accustomed to the point-and-shoot cameras of today, there are a few things you'll probably miss with a dSlr. To accommodate interchangeable lens mounts that are backwards compatible with older lenses, to allow for larger image sensors and to mimic the feeling of former Slr cameras, dSlrs are commonly much larger than point-and-shoot cameras. While there are many pluses for having a larger body, tourists and those hoping to stay inconspicuous may want to stay with the small confines point-and-shoot cameras.

Another drawback of dSlr cameras compared with point-and-shoot cameras is that there is no live preview on the rear screen. Dslrs lack this for two reasons: first, there is a shutter and a mirror blocking the path of light from the lens to the image sensor; secondly, more and more of today's dSlrs are using Cmos image sensors (which are less costly to invent and take less energy to use compared to its Ccd rival) do not offer a way of having a live preview due to the inability to map pixels into a matrix.

So while dSlrs may not be for those who need live previews or small camera bodies, their capabilities are much greater than point-and-shoot cameras -- at a price.

Digital Slrs: Why are so many people going to Digital particular Lens Reflex (dSlr) Cameras?

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