TTL is an acronym for through-the-lens and is most typically used to signify that metering (the estimation of the available light) is conducted using the actual light-path (and not based on environmental measurement).
« Back to Glossary IndexTTL is an acronym for through-the-lens and is most typically used to signify that metering (the estimation of the available light) is conducted using the actual light-path (and not based on environmental measurement).
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