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Image Stabilizing Adaptor IS-20B II
FEATURES AND TECHNOLOGIES
The Principle of VAP Image Stabilization – Normally light rays from a subject pass through the object lens to the image plane. However, shaking of the lens caused by vibration from many different potential sources would cause the light rays to move across the image plane and in turn would be shown in the image as picture movement or shake.
The Vari-Angle Prism system consists of two pieces of glass constructed using the latest optical materials and coatings with an optically pure liquid held between them producing pristine images and causing no light loss. Two shake detecting sensors for yaw and pitch are employed by the
IS-20B II to detect both angle and speed of movement and they send this information to an internal high-speed microcomputer.
When the Vari-Angle Prism (VAP system) is attached to the front of a portable lens, the angle of the prism will be changed according to the amount and direction of the vibration. Thus, the light rays are bent in an equal and opposite direction from the vibration and the subject will remain centered on the image plane – free from the shaking effect.
- The full zoom range of the master lens is maintained.
- If a lens is equipped with a built-in 2x extender, it operates normally.
- A panning switch is employed when fast horizontal pans are required.
- Two levels of stabilization are offered, High and Low.
- A built-in protection filter is standard.
- When turned off, the IS-20B II employs an Auto Lock Mechanism for the VAP optics.
- Battery Power Indicator.
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