Minggu, 06 Februari 2011

Olympus E-20 5MP Digital Camera w/ 4x Optical Zoom


Features
  • 5.2 megapixel sensor creates 2,560 x 1,920 images for prints at 11 x 14 and beyond
  • 4x optical zoom lens with autofocus
  • Included 32 MB SmartMedia card holds 7 images at default resolution
  • Compatible with SmartMedia and Type I and II CompactFlash
  • Uses 2 disposable lithium batteries (included) or 4 AA batteries; auto-connects with Macs and PCs via USB port

List Price?: $2,249.99
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Product DescriptionTechnical InformationCustomer Reviews

Amazon.com Product Description
You'd be hard-pressed to find a digital camera that captures better images than those from the Olympus E-20N. The camera pairs a 5-megapixel sensor with a high-quality custom-designed 4x zoom lens for photos with clarity that rivals film.

First, a note about naming conventions: this camera is also known as the E-20 and the E-20P. The N in E-20N signifies that this is an NTSC (North American) model. European versions are called E-20P because their video-out feature is designed to work with PAL televisions. The models are otherwise identical.

Design and Optics
The E-20N looks and feels like a high-quality professional film SLR. It's hefty, weighing in at 37 ounces, due both to the glass in the lens and the camera's cast-aluminum body. Unlike other digital cameras in its class, the lens on the E-20N is not removable, which is both a good thing and a bad thing. Digital SLRs from other manufacturers typically include just the camera body, and adding a quality lens is a substantial additional expense. Olympus asserts that having removable lenses exposes the sensor to dust, but digital SLRs from Nikon, Canon, and Fuji all use removable lenses, and dust isn't a widely reported problem with those models. Olympus also states that using a lens specifically designed for a digital camera produces sharper images than using a lens designed for a 35mm SLR. This makes sense, since the imaging sensor in a digital camera is smaller than a 35mm negative.

The lens on the E-20N contains aspheric elements, ED elements, and a Gauss-type lens group--features designed to maximize image quality, and typically found only on high-end lenses. In 35mm terms, the lens zooms from 35-140mm, with a maximum aperture of f2.0 to f2.4, depending on how much zoom is used. If you're looking for even more flexibility, add-on lenses ranging from 28mm to 420mm are available.

To compose your photos, either use the swivel-mounted 1.8-inch LCD on the back of the camera or look through the traditional-style ground-glass viewfinder. Most digital SLRs use a mirror to send light to either the viewfinder or the CCD sensor, but the Olympus uses a beam-splitter--basically a prism--to illuminate the viewfinder and the sensor simultaneously. The LCD monitor also sits on a hinge, letting you tilt it up 90 degrees, or down 20 degrees, so you can take pictures from unusual camera angles while still accurately framing the scene.

The 5-megapixel CCD sensor on the E-20N is one of the highest-resolution sensors currently available and captures images with filmlike detail. Like most CCDs, this unit retains a design limitation handed down from the device's origins in television cameras: it is an interlaced chip, which means the camera reads information from the CCD twice--once for all pixels in the sensor's even rows, and again for all the odd rows. The camera then merges these two sets of data into a single image. This technology limits the top shutter speed in


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