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How-to

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  • How-To: An Introduction to Automatic Flash Modes

    TTL is awesome, but in what settings does it work best?

    TTL autoflash is a brilliant technology that’s remarkably simple in concept. The flash fires and its light strikes your subject, then bounces back to go through the lens (the “TTL” part). A sensor in the camera reads the bounce-back and cuts out the flash when sufficient light is received for proper exposure. (On many TTL flashes, the exposure is determined by preflash, but this uses the same principle.)