| 摘要 |
PROBLEM TO BE SOLVED: To confirm the effect of a filter while viewing through a finder. SOLUTION: A filter adapter 14 is formed so as to be larger than the outside diameter of a photographing lens 12, and is attached to the photographing lens 12. A polarizing filter 15 is freely rotatably attached to the filter adapter 14. A light-transmitting window 14c is provided on the back face side of the filter adapter 14. When a photographer views through the finder 13, a filter plate 16 is seen through the light-transmitting window 14c. The photographer adjusts a polarizing quantity while viewing through the finder 13.
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