PENTAX AF 400T. The AF400T is a bracket mounted flash which provides TTL automation, two-level auto flash (using the sensor in the flash), and two levels of manual output. TTL automation works with cameras which has a built-in TTL flash sensor like the Super Program/Super A, LX, 645 film series, 67II, many autofocus bodies, and the *istD, DS ... More @Wikipedia
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