Image pickup apparatus including selective insertion of ND...

Details Image pickup apparatus including selective insertion of ND... Image pickup apparatus including selective insertion of ND...

2007-04-03

2007-04-03

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

Optics

Reexamination Certificate

active

09437497

ABSTRACT:
In a digital camera using an ND filter to be inserted into an optical path of an optical lens system, defocus quantity of the taking lens and imbalance of white balance due to the insertion of the ND filter are previously calculated or measured. The ND filter is inserted into the optical path when user fully pushes down a shutter release switch for taking an image of an object in order to shorten supply of electric power to an actuator for driving the ND filter. The position of the taking lens is compensated just before an image pickup device is driven for taking the image. The white balance of the image signals from the image pickup device is compensated by using the previously measured compensation coefficients.

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