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Canon EOS Digital Rebel XTi Digital SLR
Canon EOS Digital Rebel XTi Construction and Design
New, Highly-Legible 2.5-inch TFT LCD Color Screen
A 2.5-in., 230,000-pixel, color TFT LCD screen with a wide, 160° viewing angle is a welcome new feature of the Digital Rebel XTi. Compared to the Digital Rebel XT's 1.8-in. LCD screen, the display area is about twice as large. Also, to improve the menu's readability, the font size has been greatly increased. The LCD screen illumination is provided by three LED backlight modules and the brightness adjustment range has been expanded by one level at both the minimum and maximum levels to a total of 7 steps. During brightness adjustment, a handy and elegant grey scale is displayed along with the image.
Thanks to a highly transparent LCD screen and a brilliant LED module, screen brightness is about 40% higher than the maximum brightness of the screens found on the EOS-1D Mark III, EOS 5D, and 30D. This makes it easier to review images even in bright outdoor conditions. At the darkest setting, the display is not uncomfortably bright, even in a dark place. The maximum brightness setting changes the gamma characteristic of the display to increase the midtones, making the image look somewhat overexposed, and highlight detail tends to be lost. Therefore, it is important that when checking an image's exposure and colors, the brightness level be set to one of the middle five levels. Because the Digital Rebel XTi displays the camera settings at all times, users are recommended to set the screen brightness to a suitable level which would not be too bright in the dark.
New Display-Off Sensor
When you put your eye on the eyepiece, a new display-off sensor (located below the eyepiece) senses your face and turns off the LCD screen automatically. This is to save battery power and prevent the screen's brightness from disturbing your eye while looking through the viewfinder. The display-off sensor consists of an IRED emitter and light-receiving sensor. When the IRED light reflecting off the face is detected by the light-receiving sensor, the LCD screen turns off automatically. This display-off sensor can be disabled manually. The camera setting display can also be turned off and on manually.
New User Interface
The new user interface of the Canon Digital Rebel XTi takes advantage of the state-of-the-art, large, bright and sharp LCD screen to offer a faster, easier and more precise way to operate the camera. The basic operation procedure of using the main dial, cross keys, and various buttons to select and set functions is the same as with the Digital Rebel XT.
One difference is the XTi's ability to switch the screen display easily among the camera settings, menu screen and image playback. This is because camera settings are now displayed, one might almost say magnified, on the LCD screen instead of on a separate LCD panel. Other than when the menu screen or image playback is on view, the camera settings are shown at all times unless the display is turned off. While the menu screen or image playback is displayed, pressing the shutter button halfway will bring back the camera settings. With previous cameras, pressing the shutter button halfway turned off the LCD screen.
New Info Display Items
The large LCD screen has enabled 8 new items to be added to the info display compared with the Digital Rebel XT: ISO speed, Dimmer offset, AF frame display, White balance adjustment, White balance bracketing, Beep, Red-eye reduction mode, and Shooting display mode. The least obvious of these, and perhaps the most clever, is Dimmer offset. One line down from the top on the far right hand side of the display, either of two icons may appear. The first is a standard lightning bolt with +/- after it. When this symbol, and a number such as -2/3 appears, the display indicates that the built-in flash is set for an exposure reduction of 2/3 stop. The other icon is a picture of a Speedlite, followed by the same +/-. If that symbol is displayed, followed by, say, + 1 1/3, the display is indicating that the external flash attached to the Digital Rebel XTi is set for an increase in exposure of 1 1/3 stops.
When exposure correction is applied, the exposure correction display in the center of the second row on the LCD screen changes color for easy reference. The screen also displays error and warning messages and their solutions. A change to the info display is that the battery power remaining indicator now has 4 levels, rather than 3. The EOS 30D also offers this useful feature.
Improvements to Playback
In four playback-related improvements, the Digital Rebel XTi can now display a magnified or reduced view during quick review (C.Fn.10-1, magnified view on image review and playback); automatic image rotation for images taken in vertical orientation may be selected; a highly useful RGB histogram display is now provided, and CF card remaining capacity has been added to the playback info screen.
Viewfinder
The viewfinder has two additions, both brought from the EOS 30D: an FE lock indicator on the left side, and white balance adjustment, +/-, on the right. The red-eye reduction mark is displayed on the LCD screen, so it is not included in the viewfinder. Viewfinder blackout time is approximately 170 ms at 1/60 second or faster shutter speeds. A dioptric adjustment range from -3.0 to +1.0 dpt. is possible and an excellent Precision Matte focusing screen is standard. The Digital Rebel XTi has a depth-of-field preview feature. The button is located near the lens mount, under the left thumb when the XTi is held horizontally. The feature is enabled in the Creative Zone modes.
Strong, Lightweight Body; Exterior Color Choice of Black or Silver
The Digital Rebel XTi is a compact, stylish and attractive DSLR that continues the design concept of its predecessor, the Digital Rebel XT. The exterior surface is now coated with a leathery paint finish to make fingernail scratches less noticeable. To improve holding ease, a convenient new rubber slip guard for the thumb (back, top right) and a new grip shape in the back have been incorporated. The grip is also thicker by 1 mm. The texture of the mode dial has been changed. The Print/Share button is now on the upper left on the back of the camera where the digital control buttons are concentrated. Clearly separating the digital control buttons and camera control buttons makes the camera easier to operate. The new screen and the elimination of the bifurcated display give the back of the camera a cleaner and more integrated appearance.
The camera body construction of the Digital Rebel XTi is very similar to that of the Digital Rebel XT, a camera of proven ruggedness and reliability. The stainless steel chassis and mirror box made of high-strength engineering plastic (polycarbonate with glass fiber) make the body as strong as the XT's. As with the XT, the camera's top, front, and rear covers are made of special engineering plastic (ABS resin, polycarbonate resin, and polycarbonate resin with special conductive fibers) for light weight, high strength, and electromagnetic shielding. The XTi comes in two color versions, silver and black.
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