A-7APreparationi-TTL balanced fill-flash: i-TTL flash control type in which flashoutput level is adjusted to well-balanced exposure of the mainsubject and backgroundStandard i-TTL flash: i-TTL flash control type in which flashoutput level is adjusted to the correct exposure of the mainsubject regardless of background brightnessManual flash control: flash control mode in which the flashoutput level and aperture are manually set to obtain the desiredexposureWireless multiple flash-unit photography: flash photographywith multiple wireless flash units simultaneously firingMaster flash unit: the flash unit that commands remote flashunits in multiple flash-unit photographyRemote flash unit: a flash unit that fires following commandsfrom the master flash unitAdvanced Wireless Lighting: wireless multiple flash-unitphotography with CLS; multiple remote flash unit groups canbe controlled with the master flash unit