Canon 10 x 30 IS Technology Guide - Page 20

Various types and characteristics of image stabilization technology Presently, there are three makers, including Canon, selling binoculars with image stabilization technology 1) Vari-Angle Prism type Two sensors detect horizontal and vertical shaking respectively. The two Vari-Angle Prisms in both the left and right telescopes are controlled by a microprocessor to instantly adjust refraction angle of the incoming light. This system is used in Canon's IS Binoculars. Advantages: • Compact, light. • Immediate response after the image stabilizer is activated (the system is activated as soon as the button is pressed). • Stable image even when panning. Disadvantage: • Requires batteries. 2) Gyro type A high-speed motor-driven gyroscope is attached to a prism. No matter how much the binoculars are shaken, the image will remain stable. This system is used in Fujinon's Stabiscope S1240 and S1640. Advantage: • Extremely resistant to heavy shaking or movement. Disadvantages: • One minute delay while the 12,000 rpm motor is starting up. • Tend to be heavy. • This system is unable to distinguish between shake and panning; therefore image is not stable when panning. • Requires batteries. 3) Mechanical type The prism system is tied-in with the Cardanic Suspension system, which prevents the prisms from moving no matter how much the binoculars are shaken. This system is used in the Zeiss 20x60S Professional. Advantages: • No batteries required because of mechanical system. • Immediate response after the image stabilizer is activated (the system is activated as soon as the button is pressed). Disadvantages: • Tend to be heavy. • This system is unable to distinguish between shake and panning; therefore the image is not stable when panning. 20