Canon EOS Digital Rebel T1i SLR Review
By Mike Flacy
Features & Controls
The camera body is constructed of a rugged yet lightweight combination of stainless steel and polycarbonate plastic.
The T1i shares the same 15.1-megapixel APS-C sized CMOS sensor found on the Canon 50D. This sensor enables the T1i to record 4752x3168 pixel image with full 14-bit A/D conversion for extremely fine tonal gradation. Ready to capture images in an instant, the sensor is designed to work with Canon's EF and EF-S lenses with a conversion factor of 1.6x. It's capable of recording at sensitivities previously too noisy for shooting in low light or subjects in motion. With a maximum ISO rating of 12800 combined with a 4-level High ISO speed noise reduction function, the T1i will allow you to capture images that are not possible without using a flash on other models.
DIGIC 4 Image Processor
DIGIC 4 is Canon's latest advanced imaging technology that processes massive data from the large CMOS image sensor at 'Ultra-fast' speeds. These Ultra-fast processing speeds result in highly responsive camera operation and near-instant start-up times. DIGIC technology uses advanced image processing algorithms to ensure precise, natural colours, accurate white balance, and advanced noise reduction. The DIGIC chips work with a high-speed DDR-SDRAM image buffer - reading, processing, compressing and writing image data fast enough to keep the buffer clear during long continuous shooting bursts. And because DIGIC integrates all key processing functions, power consumption is kept to a minimum. This powerful system also has the ability to quickly process the full HD (1920x1080) video that the T1i can record.
EOS Integrated Cleaning System
No matter how careful photographers may be to change lenses in dust free areas and to keep their equipment as clean as possible, dust often ends up on their cameras' sensors, creating distracting spots on recorded images. The Digital Rebel T1i's integrated hardware and software solutions make trouble with dust a thing of the past.
I don't need to tell you how dust on the image sensor can ruin a great photo. Thankfully the Canon EOS Integrated Cleaning System is there to save the day. The Canon-designed Self Cleaning Sensor Unit uses a low-pass filter at the front of the sensor to shake off dust automatically with ultrasonic vibrations, removing dust from the sensor assembly. The EOS Rebel T1i also has a coating on the front surface of the low-pass filter, to increase its resistance to dust sticking to the sensor.
Dust Delete Data Detection
Dust on the sensor can also be 'erased' with the included Digital Photo Professional (DPP) Version 3.6 software. A simple test shot of a plain, white object can be taken, then the Dust Delete Data image is analyzed in-camera, and the location and size of any remaining dust is added to any subsequent pictures taken. This data is transmitted along with the image, whether JPEG or RAW, and can be either manually or automatically erased in Canon's DPP software. This added software option helps you achieve the cleanest possible image.
T1i Lens Mount
The Rebel T1i is compatible with all Canon lenses in the EF and EF-S lineup, ranging from ultra-wide angle to super telephoto lenses. Special optical technologies, such as Aspherical, ultra-low dispersion, or fluorite elements are featured in the L Series lenses, and Canon's Optical Image Stabilizer technology is available in select lenses to minimize the effect of camera shake.
Here you can see the controls on the front of the camera. We have the lens release button, flash button, and microphone. You can also see the AF/MF and image stabilization controls on the lens.
Shown above is the EF-S 18-55mm f/3.5-5.6 IS - a standard zoom lens made exclusively for the EOS Digital Rebel models and other EOS dSLR cameras with APS-C size image circles. Equivalent to an approx. 28 - 90mm focal length, this lens is compact and ultra-lightweight with an impressive close-focusing ability of 0.9 ft (0.28m) and features an optimized coating to minimize ghost images and flare. This lens features Canon's Optical Image Stabilizer technology, which allows sharp hand-held shots at shutter speeds up to four stops slower than otherwise possible. It consists of 11 elements in 9 groups and uses an Aspherical lens element to correct aberration for excellent image quality throughout the zoom range and a circular aperture for exquisite rendering of out-of-focus backgrounds.
The T1i is compatible with all Canon lenses in the EF and EF-S line-up, ranging from ultra-wide angle to super telephoto lenses. Canon lenses employ advanced optical expertise and micron-precision engineering to deliver unprecedented performance in all facets of the photographic process. Special optical technologies, such as Aspherical, ultra-low dispersion, or fluorite elements are featured in the universally acclaimed L Series lenses, and Canon's Optical Image Stabilizer technology in select lenses minimizes the effect of camera shake. Using Canon lenses, photographers can truly maximize the quality and performance of their camera.
The EOS Rebel T1i Digital SLR utilizes a precise 9-point wide area AF sensor that provides a cross-type AF measurement at the center that is effective with all EF and EF-S lenses. The cross-type AF measurement reads a wider variety of subject matter than conventional single-axis AF sensors and thus increases the T1i's ability to autofocus quickly and accurately when shooting still images. There are multiple focus modes available, including Auto, One-Shot AF, Predictive AI Servo AF, AI Focus AF, and Manual focusing. In Live View, the EOS Rebel T1i has three AF modes:
E-TTL II Flash
The T1i has a built-in, retractable, auto pop-up flash with a Guide Number of 13/43 (ISO 100, in meters/feet). The flash has a recycling time of a approximately 3 seconds and a flash-ready icon that is visible in the viewfinder. Flash exposure compensation is available in ±2 stops using 1/3- or 1/2-stop increments, depending on the setting selected via the Custom Function menu.
A 35-zone metering system analyzes light based on each zone in the viewing area, enabling the camera to choose the overall best exposure for the entire scene. The T1i features four metering modes to choose from, Evaluative, Partial, Spot and Center weighted average.
The T1i's E-TTL II flash metering system is compatible with all EX-series Speedlites, and even offers in-camera configuration when using the newer units, like the 580EX II Speedlite (shown above).
E-TTL II features:
The Rebel T1i features an eye-level pentamirror type viewfinder that shows approx. 95% of the captured image with 0.87x magnification (-1m-1 with 50mm lens at infinity). There is a built in -3.0 - +1.0 diopter adjustment. Around the viewfinder is a soft rubber eyecup that fits comfortably against your face or eyeglasses, it provides a 19mm eyepoint. A Display-Off sensor automatically turns the LCD monitor off whenever the camera is brought to your eye. All relevant shooting information is displayed right in the viewfinder so it's easy to check your settings without moving the camera away from your eye.
Visible inside the viewfinder are the focusing points - the active focus point(s) are illuminated to indicate which AF zone(s) are selected. Viewfinder information includes: AF information (AF points, focus confirmation light), exposure information (shutter speed, aperture, AE lock, exposure level, ISO speed, exposure warning), flash information (flash ready, high-speed sync, FE lock, flash exposure compensation), monochrome shooting, white balance correction, maximum burst, SD memory card information.
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