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I see that the Aria has five pins on the hot-shoe for flash. What are they for?

April 26, 2017ARIA Flash pins

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I see that the Aria has five pins on the hot-shoe for flash. What are they for?

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A. Enhanced TTL Flash is the reason for the five pins. The basic TLA flash system uses, as you may know, 3 pins to achieve TTL flash metering. Those functions are preserved without change on the Aria, AX and RX, which all have the 5 pin flash system. One of the extra pins offers feedback on the LCD of the TLA-360 flash as to the set f stop on the lens. The other pin allows powering down the flash output for fill-flash with the TLA-360.