| 摘要 |
<p>PROBLEM TO BE SOLVED: To check whether or not image blur occurs at the time of photographing. SOLUTION: By fitting an attaching base 20 in the accessory shoe of a camera body by an attaching screw 30, an image blur check device 1 is fixed on the camera body. A shutter speed setting variable resistance dial 11, a focal distance setting variable resistance dial 12 and a X-contact time lag setting variable resistance dial 13 are operated to set shutter speed information, focal distance information on the photographing lens of a camera and an X-contact time lag. The angular velocity of the optical axis of the photographing lens is detected at prescribed intervals over the entire exposure period and is integrated over the time so as to calculate the angular displacement. Based on the angular displacement, the shutter speed information, the focal distance information and the X-contact time lag information, the image blur amount for the entire exposure period is calculated. When the image blur amount exceeds a prescribed tolerance, an LED 14 is lit so as to inform of the occurrence of image blur.</p> |
