| 摘要 |
A camera mechanism for metering the advancement of film having metering perforations is adapted to prevent damage to the perforations during the metering function. The mechanism includes a metering pawl which drops into a film perforation just prior to the complete advancement of the film by a full frame increment. The metering mechanism further includes a pawl which cooperates with the film advancing member during the final stage of the incremental film advance so as to transport the film by engagement of the metering pawl with the film at a speed at least as great as that imparted to the film by the film advancing member thereby assuring accurate film metering without the possibility of damaging the film. The mechanism is further adapted to prevent incomplete operation of the shutter cocking and film transport member as well as to prevent premature shutter action. |
