Canon EOS 40D Digital SLR - Features

Canon EOS 40D Advanced Digital Technology

Canon's CMOS technology is one of the company's key competitive advantages, with noise reduction circuitry at each pixel site delivering virtually noise-free images. In comparison with CCD technology, the lower power consumption characteristics of Canon's CMOS sensors also contribute to longer battery life.

DIGIC III is the latest generation of Canon's proprietary image processing engine. DIGIC III technology ensures that the fine details and natural colors of the images are optimally recorded and, as an added bonus, is also responsible for the EOS 40D SLR's high-speed performance, faster signal processing and even its efficient energy consumption.

10.1 Megapixel CMOS Sensor

Although it is based on the image sensor used in the EOS Digital Rebel XTi, the EOS 40D Digital SLR's 10.1-megapixel CMOS APS-C size image sensor has been significantly improved thanks to the use of larger microlenses over each pixel to reduce noise and expand sensitivity up to ISO 3200. The EOS 40D retains the model 30D camera's 1.6x focal length conversion factor (compared to full-frame digital image sensors or 35mm film) and is compatible with the full line-up of Canon EF lenses as well as the Company's expanding selection of high-quality, affordable EF-S lenses created specifically for Canon Digital SLRs with APS-C size image sensors.

Signal conversion in Canon's CMOS sensors is handled by individual amplifiers at each pixel site. Unnecessary charge transfer operations are avoided, vastly speeding up the process of getting signals to the image processor. Noise generation is reduced, power consumption is limited and faster frame rate potential is increased.

Extensive ISO Range

The EOS 40D maintains high image quality up to ISO 1600, expandable to H:3200 for situations where flash use is not permitted or desired. Highlight Tone Priority mode gives wedding and landscape photographers the option to boost dynamic range for highlights when shooting above ISO 200 -- reproducing more tonal detail from wedding dresses, clouds and other light coloured objects.

14-Bit Analog-to-Digital Conversion

Adding to the improved virtuosity of the images captured by the EOS 40D SLR is the camera's 14-bit Analog-to-Digital (A/D) conversion process. Able to recognize 16,384 colors per channel (four times the number of colors recognized by the EOS 30D SLR's 12-bit conversion capability), the EOS 40D camera is able to produce images with finer and more accurate gradations of tones and colors. The EOS 40D also incorporates the optional Highlight Tone Priority and High-ISO Noise Reduction functions first introduced earlier this year with the EOS-1D Mark III Professional Digital SLR. Canon EOS 40D DIGIC II Image Processor

DIGIC III Image Processor

Developed to maximize performance between the capture and recording stages of digital photography, the EOS 40D's DIGIC III processor is faster and more powerful than ever. The latest-generation DIGIC III Image Processor works in concert with Canon's CMOS sensor to achieve even higher levels of performance. The entire electronic system is totally re-designed, giving the camera its incredible combination of speed and image quality. Digital noise is significantly reduced in shadow areas, and color reproduction is superior.

Outstanding Burst Speed and Start-up Time

The EOS 40D is one of the fastest digital SLRs offered at this price. It shoots up to 6.5 fps, making it ideal for everything from wildlife to sports. It can capture up to 75 JPEGs, or 17 RAW images in one burst. Whether it's the 0.15-second startup time, the high-speed mirror drive, the brief shutter lag time (only 59 msec), or the predictive AF focusing for capturing the action, the EOS 40D will amaze and delight photographers who don't want to wait for their camera when they're ready to shoot.

EOS Integrated Cleaning System

The EOS Integrated Cleaning System combats sensor dust in three important ways: Reduce, Repel and Remove.

Reduce: Internal camera mechanisms are designed to minimise dust generation. The redesigned body cap prevents dust generation through wear on the cap itself.
Repel: Anti-static technologies are applied to the low-pass filter covering the front of the sensor so as not to attract dust.
Remove: A Self-Cleaning Sensor Unit uses hi-frequency vibrations to shake dust from the infrared filter for a period of approximately one second after each start up. For instant shooting after power up, this feature is disabled immediately the shutter release is depressed.

Canon has also developed an internal Dust Delete Data system, which can map the position of visible dust on the sensor. This can then be deleted automatically after the shoot with the latest Digital Photo Professional software.

Canon EOS 40D
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