The camera has a reduced pop-up amount of an electronic flash by disposing a window member which constitutes part of an outer covering in front of the electronic flash and transparently forming a portion of the window member in front of the electronic flash. The extender-arm includes a handle section, a gripping section, and an extension section connecting the handle section to the gripping section. The electrode catalyst 5 is present selectively on surface sites of the solid polymer electrolyte membrane 2 which corresponds to the ion-conductive domains 3 rather than surface sites of the membrane 2 which corresponds to the non-ion-conductive domains 4. A connection broker maintains a state machine as to states of the sessions and permits transitions among the states in response to messages, commands, and internal decisions. The optical element is moveable within the recess between a first position in which the optical element is located in the path and a second position in which optical element is remote from the path. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300\xb0 C.