Class-leading performance and exceptional image quality are yours courtesy of a new 10.1 megapixel CMOS sensor (approx. 22.2mm x 14.8mm) developed and manufactured by Canon. Through various refinements, this sensor ensures smooth gradations, a wide dynamic range, and a low signal-to-noise ratio. Enhanced light condensing efficiency allows a wide ISO range - from 100-1600 in 1/3-stop or whole-stop increments, plus selectable ISO 3200 - for matching shooting conditions and achieving clear photos even in dark settings when used in combination with camera shake compensation. The effective angle of view is approximately 1.6 times the focal length of Canon EF lenses. And sensor performance is fast, yet energy efficient, thanks to advanced 4-channel reading per line.

Analog signals generated by the CMOS sensor are swiftly digitized by Canon's state-of-the-art DIGIC III imaging processor. This 14-bit processor (16,384 tones) produces extremely fine gradations and natural color even during 6.5fps continuous shooting. Noise reduction can be activated for long exposures and high ISO speeds to produce even smoother shadows in low light conditions. Since JPEG images are derived from 14-bit image data their quality is exceptional, with less tonal skipping. 14-bit RAW/sRAW data can be saved as 16-bit TIFF images, using bundled Digital Photo Professional (DPP) software, to maintain maximum quality.
Canon IS lenses can significantly raise the quality of your images by reducing blur caused by shaky handheld shooting. The in-lens image stabilizers in these lenses offer two clear benefits over in-camera image stabilizers: higher correction efficiency and a more stable viewfinder image. Canon especially recommends the use of these lenses in shooting situations that are prone to camera shake, such as when shooting at low shutter speeds, taking handheld shots at telephoto settings, shooting evening/night scenery, and tracking moving subjects (panning). By reducing camera shake, Canon IS lenses expand your handheld shooting horizons and make high-quality photo shooting fun and easy.




The EOS 40D incorporates various innovative measures to ensure that your photo results are nearly spotless. The infrared-absorbing glass over the low-pass filter, for example, has an anti-static surface that minimizes dust adhesion. A Self Cleaning Sensor Unit vibrates the filter to reduce clinging dust particles. Moreover, remaining dust can be detected and recorded as Dust Delete Data that is appended to your image. With the Dust Delete Function in bundled Digital Photo Professional (DPP) software, you can reduce dust with ease.