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HJ15 e

Main Features

New Solution for "Stable" HD Image Production

Preserving Full HDTV Optical Performance with incorporation of IS System

The nature of high definition imagery is the sensitivity to a sudden lowering of image

quality when the originating HD lens-camera system is subject to physical disturbances.

Based upon long term operational studies and extensive research Canon has successfully

developed a powerful real-time counter to the many forms of physical disturbances that can

be encountered on location shooting.

Powerful Image Stabilization for Various Environments

Throughout the entire zoom range, the Vari-angle Prism image stabilizer technology

provides real-time compensation for a wide range of disturbance frequencies to ensure

a high level of HD image stabilization. These disturbances include lens-camera jolting

associated with handheld and shoulder mounting by a camera operator who is in motion,

vibrations when tripod mounted on an unstable platform or in windblown environments,

to the higher vibration frequencies encountered when operating on vehicles, boats, and

aircraft.

Various Stabilizing Modes

In order to optimize the image stabilization action for different shooting conditions, various

stabilization modes are selectable. Combination of two modes from each category is

available and each mode is simply set by changing the switches on the lens.

Portable mode

Select According

to the

Shooting Situation

Tripod mode

H+V mode

Select According

to the Direction

of Disturbance

V mode

Vari-Angle Prism Image Stabilizer (VAP-IS)

Under perfect shooting conditions, light rays from a scene pass through the lens optical

system in a tightly prescribed manner. Any vibration or jolt to the lens-camera system

will deflect those light rays and produce image unsteadiness. The VAP-IS technology is

incorporated within the lens optical system to intercept such light ray perturbations and

correct their deviations in real-time. The technology to do this is based upon a flexible

optical bellows that entails two flat glass elements separated by a special liquid forming a

sealed mini-optical grouping within the overall lens element groupings. The bellow expands

and contracts when the lens is physically disturbed – and the very high refractive index

of the liquid bends the disturbed light rays in the opposite direction. This imparts a high

degree of real-time correction to the angle of the light rays, ensuring they arrive at the

image plane devoid of any unsteadiness.

optomechanical subsystem and some years of incremental refinements to the design that

have produced the very high performance in the new HJ15ex8.5B lens.

Light Ray

Image Plane

Without VAP-IS

8.5BKRSE - V

Canon introduces an important innovation in HD production portable lens,

the HJ15ex8.5B KRSE-V. This is specifically intended to extend production

flexibilities in mobile HD shooting of many forms. The lens embodies a

built-in optical image stabilization system based upon Canon's patented

Vari-Angle Prism Image Stabilizer (VAP-IS) technology. Canon's IS

technology has been significantly improved over an earlier system deployed

a decade ago in a standard definition lens. Rock solid imagery is ensured

when the lens-camera system is subjected to a wide range of perturbation

frequencies encountered by a camera operator who is shooting handheld

while walking, running, or operating from a motorcycle pillion, within a

moving vehicle, boat, or helicopter.

Compensates for motion-related disturbances while

shooting shoulder mount or handheld

Effectively compensates for disturbances caused by

unsteady platform or wind.

Optimizes stabilization action when disturbance frequencies

are both horizontal and vertical

Effectively counters vertical disturbances while operationally

panning the lens-camera

There is considerable science underlying this

Image

Shake

Incident Ray

VAP-IS ON