YONGNUO YN585EX P-TTL Wireless Speedlite Flash Light

Features:
Compatible for Pentax wireless flashing system, can receive wireless signal from AF-360FGZ, AF540FGZ II and P's master units.
Can be trigger by the camera set-top, built-in or master wireless flash, S1 S2 pre-flash cancel mode.
Three flash mode: P-TTL, M, Multi; 4 channels, effective wireless distance 20m ~ 25m indoor, 10m ~ 15m outdoor.
GN58 @ISO100, 8 output levels (1/128-1/1), 29 levels of fine tuning, flash time 1/200s - 1/12000s.
Support Exposure compensation, Bracket Exposure, Rear-Curtain SYNC, Red-eye Reduction, High-speed Continuous Shooting.
Support Auto/Manual zooming, the zoom range from 20 - 105mm.
Support advanced option settings and save it automatically.
Equipped with the AF-assist beam emitter, allows you to focus easily in dark environment.
Sound prompt system, different sound modes for different working status, hear it and identify it.
Clear LCD screen show working status and display real-time battery power.
Can rotate -7 ~ 90vertically, 180horizontally(towards the left/right).
With USB interface, you can upgrade firmware from the Yongnuo official website; with 2.5mm PC synchronous interface.