Camera with film cassette

Claim 1

In a camera including: an objective lens movable along its optical axis for focussing; a shutter including movable blades relatively slowly movable from their closed to opened position to open said shutter and relatively rapidly movable from their opened to closed position to close said shutter; means for opening said shutter in response to shutter release operation; light sensitive means for generating an output commensurate with the brightness of an object to be photographed; means for closing said shutter when a time period dependent on the output of said light sensitive means has passed after the opening of said shutter; electronic flash means having an electronic flash tube and a firing circuit for firing said electronic flash tube; a power source; a power source switch manually operable to a closed position and an opened position and connected between said power source and said electronic flash means; a synchronous switch which is closed to cause said firing circuit to fire said electronic flash tube when said shutter is brought into its open position, the improvement wherein said synchronous switch comprising: a first contact movable with said movable blades; and a second contact movable into and out of the path of said first contact respectively when said power source switch is in said closed position and in said open position, said second contact being additionally movable along said path of movement of said first contact in accordance with the position of said objective lens, whereby, when said power source switch is in said closed position, said first and second contacts engage one another during the movement of said movable blades toward their opened position with a timing which depends upon the position of said second contact along said path of movement of said first contact.