A photographing device configured to photograph a plurality of images consecutively by changing an exposure value is provided. The photographing device may include a control-range-determination unit configured to determine a control range which is a range where the exposure value is varied, and an interval-calculation unit configured to calculate a control interval which is an interval between photographing-exposure values that are exposure values existing in the control range and that are exposure values of the photographed images so that the photographing-exposure values are uniformly distributed over the control range according to a number of the photographed images.

 
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> Sound signal processor and method for processing sound signal using the same

> Image pickup apparatus having, disposed between an image pickup optical system and an image pickup unit, a birefringent crystal optical member, a phase-difference-changing crystal optical member, and a birefringent organic film

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