GooDMooD писал(а):
580, закройте рефлектор темным чем-то, включите режим мастер и попробуйте поджечь другую пыху. Вы будете удивлены, что и 580 тоже работает по ИК каналу.
Нуб!
Нубнубнубнубнубнубнубнуб!
Нуб!!!!!
Нуббббббббб! 
Я уже давал пруфлинк в этой ветке:
http://cpn.canon-europe.com/content/edu ... s_flash.dop2. How it works"
A Speedlite master flash unit communicates with the slave units using visible light (infrared radiation with the Speedlite Transmitter ST-E2).
The information is coded and compressed into a 2 to 5 byte signal. This is transmitted as a 10KHz high-speed pulse. "
Цитата:
встроенная пыха ввапсче никакой инфы не несет.
"As soon as the shutter button is pressed, the camera takes an ambient light meter reading. This is stored in the memory. Next, the master unit transmits a signal to slave unit A (or all slave units set to group A if there is more than one). This triggers a pre-flash from the unit (or units). This flash is metered and stored in the memory. This sequence is repeated in turn for the unit or units in group B, and then in group C.
The master unit knows if you are not using units set to group B or C because it will not receive back any pre-flash data.
The memory now has readings for the ambient light, plus the pre-flashes from groups A, B and C. With this information, the camera can calculate the output needed from each of the flash units for a balanced exposure. This information is transmitted to the units, and they all fire in synchronization with the opening of the camera shutter."
