While many of the feature advancements and innovations on the new EOS Digital Rebel XT digital camera are inherited from Canon's EOS 20D "prosumer" SLR, the two cameras' most striking technological similarities are their use of Canon's newly developed large-single-plate, high-sensitivity, high-resolution color CMOS imaging sensor technology. While the size of the APS-C CMOS sensor on the EOS Digital Rebel XT SLR is fractionally smaller than the APS-C CMOS sensor on the EOS 20D camera (22.2 x 14.8 millimeters versus 22.5 x 15.0 millimeters, respectively) accounting in part for the cameras' 8.0- vs. 8.2-megapixel resolution rating, individual pixel dimensions are identical, and they both provide the same effective angle of view, equivalent to 1.6x the normal EF lens focal length.

     There are, of course, some very real differences between the EOS Digital Rebel XT digital camera and the more advanced EOS 20D. While the 20D SLR includes performance features such as faster continuous shooting speed (5 frames per second [fps] vs. 3 fps) with larger burst capability (23 frames vs. 14 frames) and custom function settings (18 vs. 9) that more than justify its heftier price tag, this new Rebel XT model was created for those dedicated SLR users who are migrating to digital for the first time and don't wish to give up the flexibility an SLR system offers.

Autofocus Made Easy
Utilizing the same 7-point autofocus system as the EOS Digital Rebel camera, the new EOS Digital Rebel XT SLR is capable of analyzing where a subject is--even when it is off center--and almost immediately bringing it into focus. It can also analyze subject movement and automatically select locking or tracking AF modes as needed. These features simplify the camera's operation and optimize its performance. The Digital Rebel XT allows users to select locking or tacking AF modes independently, adding a new dimension of creative control.

Finer Photos Faster
The new EOS Digital Rebel XT digital camera can shoot up to 14 consecutive large/fine (8.0-megapixel) JPEGs, five RAW files, or four RAW + large/fine JPEGs at a rate of up to 3 fps. The EOS Digital Rebel camera's smaller buffer permits bursts of only four large/fine (6.3-megapixel) JPEG or RAW frames at a rate of up to 2.5 fps.

While reprising the Digital Rebel SLR's ISO range of 100, 200, 400, 800, and 1600, Canon raised the Auto ISO setting on the Digital Rebel XT model to 400 help improve image quality, reduce camera shake, and brighten the scene behind the subject when taking a flash photo. The new Digital Rebel XT camera also offers 12 exposure modes that are user selectable at the turn of a conveniently placed dial. The exposure modes--Full Auto, Portrait, Landscape, Close-up, Sports, Night Portrait, Flash Off, Program AE, Shutter Speed-Priority AE, Aperture-Priority AE, Manual, and Auto Depth-of-Field AE--take into account virtually all shooting conditions and preferences.

     In addition to its lossless compression 8.0-megapixel RAW image file option, the Rebel XT Digital SLR offers users the option of shooting in a range of sizes and quality JPEG settings from large (8.0-megapixel) and medium (4.15-megapixel) to small (2.0-megapixel). Within each resolution option, the user may also select quality settings: large/fine, large/normal, medium/fine, medium/normal, small/fine, and small/normal.

RAW Power
What's more, while the original Digital Rebel camera required dedicated software to extract embedded medium/fine resolution JPEGs from the larger, uncompressed RAW image file, the new Rebel XT model saves RAW and large/fine resolution images as separate files on the CompactFlash card. The user also has the option of selecting RAW (8.0-megapixel) files only, saving valuable space on the CF card. As with the EOS 20D, the Digital Rebel XT camera's RAW files are denoted by the CR2 extension.

Creative Control
Among the new features found on the EOS Digital Rebel XT camera are user-selectable metering and AF modes, flash exposure compensation control, improved E-TTL II evaluative flash metering, and, for the first time in this product category, custom function control. The Digital Rebel XT SLR even offers a monochrome mode for consumers who enjoy the subtleties and shadings that only black-and-white images offer.

     The Rebel XT camera incorporates nine of the Custom Functions previously found on the EOS 20D model. Designed to fine-tune camera operation according to personal preferences, the custom functions offer users a set of programming options for the SET button/cross keys, as well as control over long exposure noise reduction, flash sync speed in AV mode, AF start from the shutter button or AE lock button, AF assist beam, mirror lockup, E-TTL II metering patterns, and shutter curtain sync.

All This and DIGIC II
Canon's newest and most powerful SLR imaging engine, DIGIC II, provides high precision and high speed, natural color reproduction including high saturation, bright subjects, improved auto white balance, and increased white balance correction control and white balance bracketing over the original Digital Rebel camera.

     The white balance correction control is a digital color filter that works like a light-balancing filter or a color-compensating filter. Both the blue/amber bias and the magenta/green bias can be adjusted to +/- 9 levels. While the blue/amber bias adjustment is standard on the original Digital Rebel model, the Rebel XT camera's additional magenta/green bias adjustment provides increased color compensation from the earlier model.

The Rebel XT SLR's white balance bracketing mode enables the camera to automatically take three images for every shot snapped, each with a different bias setting. The user can then select the best shot and discard the other two. White balance bracketing can also be used in combination with white balance correction. The benefit of all this white balance wizardry can be found in the photographs with colors captured accurately and precisely under a wide range of conditions.

    In addition to the legion of image-quality improvements, DIGIC II speeds up the camera's performance from startup, which is 10 times faster on the EOS Digital Rebel XT model (0.2 seconds) than it is on the EOS Digital Rebel with the original iteration of DIGIC (2 seconds).

Another feature improved by the presence of DIGIC II is the speed of the direct printing function, which is PictBridge compatible. DIGIC II also produces faster startup times, faster CompactFlash card writing speed, and approximately 10x faster data transfer speeds thanks to the processor's new USB 2.0 high-speed interface. As an added bonus, the DIGIC II chip is so efficient, it actually reduces the EOS Digital Rebel XT camera's power consumption (and extends battery life) by approximately 35 percent. Indeed, this new Rebel XT camera is so energy efficient, it is powered by the same lighter-weight NB-2LH battery pack used by the PowerShot S60 (as opposed to the larger BP-511A battery pack used by the original Digital Rebel model).

E-TTL II: Exposure Control in a Flash
The new Rebel XT camera also features the next step in the evolution of evaluative, through-the-lens exposure control, E-TTL II. Though compatible with all Canon EX-series Speedlites, this smarter new E-TTL II system helps ensure that, even in situations with highly reflective subjects or backgrounds or when shooting in most other similarly difficult lighting situations, the image will be optimally exposed.