Canon Speedlite 420EX Instruction Manual - Page 37
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Flash in Other Picture-Taking Modes -Itommommommer moor Tv : TTL Autoflash and Shutter Speed-Priority AE When you want to use the shutter speed to create a certain effect, set the camera to shutter speed-priority AE. In this mode, you set the shutter speed anywhere from 30 sec. to the camera's fastest sync speed. The camera then sets the aperture automatically to obtain the correct background exposure. TTL autoflash controls the flash output based on the set aperture. Set the camera to the mode. Tv t2s 4.0 t • Set the desired shutter speed. • Turn the camera's electronic dial to set the shutter speed. • Set the shutter speed anywhere from 30 sec. to the camera's fastest sync speed. Take the picture. • Focus the subject, check that the icon is lit in the viewfinder, then take the picture. If the minimum aperture setting blinks, the background will be overexposed. If the maximum aperture setting blinks, the background will be underexposed. Change the shutter speed until the aperture setting stops blinking. 37