Canon EOS-1Ds Mark III Professional Products 2010 Brochure - Page 12

The Technology to Set the Standard Raising the Bar in Professional Cameras EOS-1Ds Mark III: A Full-Frame Performance Standard 24.0 mm 36.0 mm EOS-1Ds Mark III Full-Frame CMOS Sensor (Actual Size) The EOS-1Ds Mark III incorporates the Canon CMOS sensor, which delivers approximately 21.1 Megapixels (5616 x 3744 pixels). The recording area of the sensor is 36.0 x 24.0mm, which is equivalent to the full-frame size of the 35mm film format. Compared to typical smaller digital camera sensors, the Canon full-frame sensor can accomodate a tremendous pixel count while maintaining larger individual pixel site size. The EOS-1Ds Mark III can capture up to 56 consecutive full-resolution JPEG images or up to 12 RAW images in a single continuous burst (at 5 fps with 21.1 Megapixel files). Larger sites improve lightgathering capability, enabling the sensor to produce a cleaner, more noise-free image. The Canon full-frame sensor thus delivers high-resolution images of exacting precision, with jaw-dropping data density for enhanced large-output capabilities and post-processing cropping flexibility. Full-frame sensors let photographers use the entire range of superb Canon EF lenses without a conversion factor, making it possible to take full advantage of the specific optical characteristics for which the lenses were designed. This is an important benefit for photographers who have a sizable EF lens collection. Image Quality Canon Exclusive CMOS Sensor Designed and manufactured by Canon, CMOS single-plate sensors advance the state of the art in professional SLR sensor design. The imaging area of the CMOS sensor of EOS-1Ds Mark III measures 36.0 x 24.0mm (full-frame) - appreciably larger than 28.1 x 18.7mm (APS-H) and 22.2 x 14.8mm (APS-C). Effective Light-gathering The EOS-1Ds Mark III sensor has 21.1 Megapixels. Individual pixel size on the 1Ds Mark III's sensor is 6.4µm. 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. Wide ISO Range By combining the splendid image capture capabilities of the sensor with advanced Dual "DIGIC III" Image Processors, the EOS-1Ds EOS-1Ds Mark III 50 100 - 1600 3200 ©2009 Vincent Isola Mark III offers extraordinarily wide ISO range, making it possible to shoot even in previously impossible lighting conditions. The standard ISO range of 100-1600, can be extended to a remarkable low end of 50 and high end of 6400.* More importantly, the low-noise performance at high ISO settings makes the entire range usable in real-world shooting situations. *CIPA standard output sensitivity. Recommended exposure index. Low Noise, High Speed To achieve even less noise, the EOS-1Ds Mark III has a feed-through output amp that attains both high speed and low noise. Low noise is also achieved with an improved manufacturing process, an optimized pixel amp and an optimized reading circuit. The EOS-1Ds Mark III employs a single-line, 8-channel reading. With a faster output amp and optimized read circuit, a continous shooting speed of approximately 5 fps is attained. To minimize the higher power consumption Diagram of 8-channel Signal Reading Time 23 TECHNOLOGY Microlens Comparison & Opening Ratio Pixel Size Low-pass Filter Construction Dichroic mirror (Reflects infrared rays) Infrared-absorbing glass CMOS sensor Low-pass filter (Separates image in vertical direction) Phaser layer (Converts linear polarized light into circular polarized light) Low-pass filter (Separates image in horizontal direction) required by the faster signal reading, the output amp's power consumption has been reduced. Also during long exposures, power to the output amp is turned off and the standard current driving the circuit is also cut off to save power. In addition, during shooting with Live View Function, the power distribution for the signal-reading operation is optimized for more pinpoint power-saving control. For the Self Cleaning Sensor Unit, the infrared-absorption glass is separate from the three-layer, optical crystal plate. This makes the dust-shaking plate lighter, saving power and making it easier to control. The infrared filter has a hybrid construction; it has an infrared-absorption glass with multiple coatings to reflect infrared and ultraviolet rays. It effectively reduces red fringing and color casts caused by reflections of the sensor surface. A sophisticated low-pass filter is also utilized, behind the IR-cut filter, to minimize color artifacts such as moiré. Performance: Dazzling Speed, Superb Precision Dual "DIGIC III" Image Processors DIGIC, a high-performance imaging processor, has been a major feature of Canon digital cameras because of its very fine image detail, natural color reproduction and high-speed signal processing. DIGIC III retains its basic concept and improves upon it with higher performance and faster speed. For the EOS-1Ds Mark III's 21.1 Megapixels, Dual "DIGIC III" Image Processors work for ultrafine detail, natural color reproduction and high-speed image processing. The extra power of Dual "DIGIC III" Image Processors has also allowed analog-to-digital conversion to improve from 12 to 14 bits per channel, meaning that tonal gradation for RAW images is divided into 16,384 separate levels per channel rather than 4,096. When saved as a 16-bit TIFF image, the image retains the full range of tones obtained with 14 bits. Also, JPEG images, at 8 bits per color, are generated from the 14-bit data. Blazingly Fast Shooting Speed and Outstanding Burst Rate The EOS-1Ds Mark III provides a continuous shooting speed of 5 fps at its full 21.1 Megapixel resolution. It can also capture up to 56 consecutive full-resolution JPEG 5 fps continuous shooting speed (Images simulated) images or up to 12 RAW images in a single continuous burst. A shutter assembly, an autofocus system and Dual "DIGIC III" Image Processors contribute to the landmark speed of the EOS-1Ds Mark III. High-precision AF System The autofocus system of the EOS-1Ds Mark III represents a complete reconsideration of pro- AF Sensor fessional autofocus. In addition to a sensor chip, sophisticated manufacturing technologies have made it possible to reconfigure the concave submirror and the cleverly-designed secondary image formation lens. The result is greater sensitivity, easier and more logical navigation, higher precision and significantly better real- world performance. In the previous 45-point AF system used by such cameras as the EOS-1v, EOS-1D, EOS-1Ds, EOS-1D Mark II, EOS-1Ds Mark II and EOS-1D Mark II N, there were seven cross-type, high- precision sensors grouped around the center of the frame. Any of the 45 points could be selected by navigating around the frame. This was the configuration of the previous 45-point AF array: Here is the AF point layout: : f/2.8 sensors ((Cencer AF point is f/4) : f(/C5.6 sensors Note that the 19 high-precision, cross-type points are no longer clustered solely in the center of the frame. The 26 additional assist AF points are horizontal-line sensitive at f/5.6, are not user selectable, but can be added to a manuallychosen point to expand its size, and are also used in Automatic AF point selection mode. 24