Дата: 21-05-2022, 02:33
The identical association is used with the pneumatic release and for time exposures i.e. F is partially depressed. Changing the pace setting alters the place of the fulcrum of the lever L i.e. where L and T meet. The speeds are set by transferring an external lever which moves the velocity setting rod which adjusts the stream of air to and from the pneumatic cylinder. The shutter speed is about on the cam at the top of the digital camera, this units the tension in spring F which tends to turn lever E anti-clockwise. The setting sector is caught by the release lever at its center notch. When set to T the bottom lever rises, it was held down by the separate T plate, on release the set off plate can rotate until it meets the end of the center (B) lever where it's held till pressure is removed from the discharge button, it is then held by the lowest (T) lever until the release knob is once more pressed. The lever requires two turns to change the slit by 1 mm, as the lever is turned it additionally strikes a pointer around the sting of the pace dial. Around the centre of the arm is a coiled spring the 2 ends of which are prolonged to lie each side of a stud on the higher a part of the arm.