O'Reilly logo

Canon EOS 40D Guide to Digital Photography by David D. Busch

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Sensor Cleaning: Auto

One of the Canon EOS 40D’s best new features is the automatic sensor cleaning system that reduces or eliminates the need to clean your camera’s sensor manually using brushes, swabs, or bulb blowers (you’ll find instructions on how to do that in Chapter 9). Canon has applied anti-static coatings to the sensor and other portions of the camera body interior to counter charge build-ups that attract dust. A separate filter over the sensor vibrates ultrasonically each time the 40D is powered on or off, shaking loose any dust, which is captured by a sticky strip beneath the sensor.

Use this menu entry (shown in Figure 3.25) to enable or disable automatic sensor cleaning on power up (select Auto Cleaning to choose) to activate ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required