| 摘要 |
PURPOSE:To make an interval between the image planes of the whole number of photographing frame constant by detecting the final perforation of an automatic loading action by an identical system to the feeding control of a film at an actual photographing time. CONSTITUTION:The comparison level decision means of a control means (microcomputer) 1 decides a comparison level based on a photoelectric conversion signal from a signal output means Pr before the final perforation is detected where the automatic loading action of the film is finished. Besides a final feeding control part detects the final perforation where the automatic loading action is finished by a comparison signal CMP from a signal comparison means (comparator) 12 based on the decided comparison level. In the case that three and half frames of the film, for example, is fed by the automatic loading action at the initial time of the automatic loading action, the first two and half frames are fed by digital control and the comparison level is decided during it. Then, the third frame is fed by using the identical comparison level to that at the photographing time and controlled under a state that the perforation is actually counted. |
