the inverter 11 is 34 1 34 high level while the and gate 13 is in the enable state further to the other input of the and gate 13 the 2 hz signal inverted by the inverter 9 is delivered so that the same signal as the inverted one of 2 hz is delivered from the and gate 13 to the or gate 15 at the time of the start of the operation of the counter the signal of 1 16 hz is 34 0 34 so that the and gate 14 is in the disable state whereby the 34 0 34 output is delivered to the or gate 15 thus the inverted signal of 2 hz is delivered from the or gate 15 to the transistor 20 via the resistance 19 so as to close and open the transistor 20 led21 is lit when the transistor 20 is closed and put out when the transistor 20 is opened so that led21 is lit when the signal of 2 hz is 34 0 34 when the signal of 1 16 hz is 34 0 34 and extinguished when the signal of 2 hz is 34 1 34 led21 thus flickers at the frequency of 2 hz at the start of the operation of the self timer so as to display that the self timer is in operation when the brightness is above a certain determined level at the time of the shutter release the 34 1 34 output of the brightness judging circuit 17 is delivered to the and gate 16 because a signal of 4 khz is delivered from the counter 7 to the and gate 16 when the output of the or gate 15 is 34 1 34.