Through-The-Lens Meter

A TTL meter is a light/exposure meter which is built into your camera, and takes light readings through the lens to determine the correct settings when in automatic mode. Often, this meter sends out a pre-flash or infrared sensor in order to detect the amount of available light. This signal may inadvertently trip your unit’s built-in slave tripper, and therefore can not be used with flash units.

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[ NEAR MINT ] Voigtlander BESSA R2 Leica M Rangefinder Camera From JAPAN #641
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