The EOS-1D Mark III incorporates the EOS Integrated Sensor Cleaning System, which is
a complete anti-dust system. It suppresses dust generation and dust adhering to the
sensor, removes dust and makes any remaining dust less noticeable.
• The shutter has been improved to generate less dust
• The body cap has also been improved to generate less dust
• The low-pass filter's anti-static charge surface prevents
attracting dust due to static charge
• The sensor unit is self-cleaning
• Dust Delete Data is obtained and appended to images.
• Manual cleaning of the imaging sensor is still an option
The new, compact Self-Cleaning Sensor Unit for the APS-H size imaging sensor has been
designed for the EOS-1D Mark III and is different from the EOS Digital Rebel XTi/400D
Digital's unit. (The Dust Delete Data specifications are the same as with the EOS Digital
Rebel XTi/400D Digital.) On the front infrared-absorption glass, two thin, single-layer
piezo-electric elements are attached. By applying ultrasonic vibration to the infrared-
absorption glass, the adhering dust is shaken off. The removed dust particles are stuck
onto absorbent material around the infrared-absorption glass. Also, to prevent dust
from entering the sensor unit, the assembly is secured with sealing material around the
perimeter. Another camera maker vibrates an extra glass plate dedicated to dust removal.
Because the EOS-1D Mark III vibrates the infrared-absorption glass directly, the optical
performance is not degraded by an extra layer of glass and the unit can be kept compact.
The Self-Cleaning Sensor Unit can therefore be incorporated in a conventional size body.
Operation timing is either auto or manual. The default setting has the unit operating for
about 3.5 sec. whenever you turn the power switch ON or OFF. While the unit is operating,
the LCD monitor displays a logo indicating that sensor cleaning is being executed. If the
menu is set to [Auto cleaning: Disable], the auto cleaning is not executed.
IV. EOS INTEGRATED CLEANING SYSTEM
14
Self-Cleaning Sensor Unit
IV. EOS INTEGRATED CLEANING
SYSTEM
Infrared-absorption glass
Piezoelectric element
Support material
Sealing material
Low-pass filter
CMOS sensor
