Canon EOS Rebel T1i EOS System Brochure 2010 - Page 5

Canon CMOS Sensor Taking advantage of its own proprietary technologies, Canon develops and produces its own CMOS sensors. Unlike CCD sensors, CMOS sensors convert and amplify signals before they are transferred to the image processor, enabling them to produce exceptionally clean image data and reduce power consumption by as much as 90%. Data transfer speeds are increased by using multi-channel signal paths that dramatically improve the camera's responsiveness. Canon's CMOS sensors incorporate a unique on-chip noise reduction technology to deal with both fixed pattern and random noise. In addition, a multilayer low-pass filter is placed in front of the sensor to isolate false colors that the sensor may detect. Then, Canon's own ≥ Image Processor processes the image to help eliminate those colors while retaining full detail. CMOS sensors can also be fabricated to full-frame 35mm dimensions, an important consideration for photographers who wish to use their lenses without a conversion factor. Canon's CMOS sensors deliver outstanding resolution and signal purity, making them ideal for the most critical photo or video applications. Full-Frame Canon CMOS Sensor The Canon-manufactured full-frame CMOS sensor delivers professional performance with digital convenience. EOS Digital 8 EOS-1Ds Mark III Full-Frame CMOS Sensor (actual size) SLR cameras with full-frame sensors, found on the EOS-1Ds Mark III and EOS 5D Mark II, do not require a focal length conversion factor common to other digital SLR cameras on the market. Instead, they deliver the same angle-of-view as 35mm film cameras, so the working distance to the subject, with a given lens, is the same as it would be on film. Since you can use EF lenses on either 35mm film cameras or Canon Digital SLR cameras with the same results, the switch from film to digital is truly seamless. Full-frame sensors provide greater control over depth-offield, which helps to create beautiful background blur, perfect for portraits. The large sensor area also helps to enable a marked reduction in noise levels at all ISO values. When combined with high resolution and smooth gradation from ©Clay Blackmore APS-C (1.6x) APS-H (1.3x) Full-Frame (1.0x) When using the same lens with different cameras, the angle-of-view varies depending on the sensor size. highlights to shadows, Canon digital SLR cameras with full-frame sensors produce images that rival those taken with professional medium-format and large-format film cameras. For maximum control and dependable performance, the choice is simple-Canon full-frame Digital SLR cameras. Effective Light-gathering The EOS-1Ds Mark III and 5D Mark II sensors have 21.1 effective megapixels and the EOS-1D Mark IV has 16.1 effective megapixels. Individual pixel size on the EOS-1Ds Mark III's and 5D Mark II's sensors are 6.4μm, and the EOS-1D Mark IV's sensor is 5.7μm. By optimizing the gap between the on-chip microlenses and improving the fill factor (photodiode area divided by total pixel size) of each pixel, light-gathering efficiency has been improved. EOS SLR CAMERAS High ISO - Whether shooting stills or video, Canon EOS SLR cameras capture silky-smooth low-noise images that are sharp with a wide dynamic range of color and tone, even at high ISO speeds. ≥4 / ≥III Image Processor Developed to maximize performance between capturing and recording stages of digital photography, the DIGIC 4 and DIGIC III Image Processors by Canon use advanced signal processing technologies to dramatically enhance image quality and deliver a more intuitive, responsive camera. The DIGIC 4/III Image Processors work in concert with Canon CMOS sensors to achieve even higher levels of performance, with high-end EOS cameras incorporating Dual DIGIC 4 Image Processors. Signal process- Extensive ISO Range* EOS SLR cameras feature an extensive ISO range for greater flexibility in diverse photographic situations. The EOS-1D Mark IV features the Taken with the EOS-1D Mark IV. ing algorithms work with the multi-channel signal from the sensor and the high-speed DDR-SDRAM buffer to deliver significantly improved camera response. Power consumption has been further reduced for even longer battery life. Color reproduction, noise reduction in low light situations and reproduction of fine detail are all significantly improved. In addition, the latest Dual DIGIC 4 Image Processors speed up all operations such that a number of processor intensive features are possible. Canon technologies like Face Detection Live mode, Full HD and HD movie recording, Lens Peripheral Illumination Correction and Auto Lighting Optimizer are all possible thanks to the power afforded by the amazing DIGIC Image Processor. *Standard output sensitivity. Recommended exposure index. breathtaking ISO range of ISO 100-12800 (L:50, H1: 25600, H2: 51200, H3: 102400)! Even at higher ISO settings where one might expect to see a higher degree of noise, the renowned Canon CMOS sensor and noise reduction system work to ensure superb image quality. Accordingly, even the most critical photographers can use EOS SLR cameras with confidence, no matter the light. Advanced 14-bit A/D Conversion EOS Digital SLR cameras employ 14-bit converters to process the output of the imaging sensor. Compared to the 12-bit converters used in most digital cameras, the Canon design helps ensure smoother tonal transitions, more natural gradations, and superb color fidelity. RAW images are recorded at 14 bits so that processed 16-bit TIFF images contain the full range of tonal values captured by the sensor. Highlight Tone Priority Loss of highlight detail is one of the greatest concerns for photographers shooting digitally in brightly Highlight Tone Priority: ON lit and contrasty situations. Canon's Highlight Tone Priority function calculates the exposure to expand the image's dynamic range so that Highlight Tone Priority: OFF more detail is preserved in highlights. This renders a more continuous tone image without blown highlights, and helps to save time in postprocessing for highlight retrieval. Lens Peripheral Illumination Correction Another feature available in Canon's newest EOS Digital cameras is Canon's Lens Peripheral Illumination Correction feature. Taking into account the lens in use, this feature automatically brightens the light level at the four corners of the composition where light falloff may have occurred. Peripheral illumination characteristics and correction data are detected automatically on a number of Canon lenses and can be entered manually through Canon's EOS utility software. This function can be applied when shooting to JPEG images, and in post-processing with RAW images. Auto Lighting Optimizer One of Canon's newest technologies, the Auto Lighting Optimizer, automatically corrects image exposure to help ensure accurate brightness and contrast. It can actually brighten areas of Auto Lighting Optimizer OFF Auto Lighting Optimizer ON the composition while maintaining highlight details and accurate exposure in others, or darken areas of composition while maintaining brightness and shadow details in others. This remarkable feature is available as both an automatic feature in Full Auto and Creative Auto shooting modes, and can be used and fine-tuned in other modes. The Canon Auto Lighting Optimizer ensures beautifully exposed images that require little to no post-production work. 9