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Specifications: Type: P-TTL lens-mounted ring flash with hot shoe controller
Focal Length Coverage: 100%
Flash Range: 0.59-6.6' (GN 16, ISO 100, f/8)
Color Temp Balance: Daylight
Other Functions: Auto Power Off 180 seconds, Modeling Light, P-TTL Flash Exposure Compensation (+0.5 to -1.0 EV in 1/2 EV increments)
Flash Control: TTL-series-control auto flash, manual flash
Flash exposure compensation: In P-TTL mode, +0.5 to -1.0 in 1/2 step increments. In Manual mode, 1/4 and 1/16 output.
Discharge Angles: 60° from up/down/left/right (flash output ratio selectable from left, left center, center, right center, right)
Sync Modes: Leading Shutter Curtain Sync
Compatibility: All PENTAX DSLR cameras
Flash Modes: P-TTL (TTL corrective auto flash, contrast-control auto flash), TTL (TTL auto flash), Full 1/4 output, 1/16 output (manual flash)