Compatible with Pentax P-TTL 

A YN585EX supports receiving wireless signal from the master unit of AF-360FGZ, AF540FGZ II and other Pentax cameras. It also supports 4 channels, off-camera TTL and manual flash. 

Completely Support TTL Function 

YN585EX supports FEC, FEB, Rear-curtain Sync and Red Eye Reduction.

TTL flash with High Guide Number

GN58@ ISO100，105mm；supports TTL, M and MULTI mode.

Multiple Trigger Synchronous Mode Supported

wireless triggered by the built-in flash or master flash, or triggered in S1/S2 pre-flash avoidance mode.

Firmware Upgrade

USB port accepts to download the latest firmware and upgrade the speedlite by YONGNUO official website 

Zoom Range: 20-105mm 

Supports auto and manual zooming, the flash can coverage can be changed between 20~ 105mm.

Ultra-fast Charging Recycle System

Recycle time for up to 4-5seconds and full-output recycle time even just takes 3 seconds. 

Display real-time remaining battery power 

YN585EX supports to display remaining battery power in real time. 

Sound Prompting System

Different sound indicates the flash mode which adds additional convenience 

AF-assist beam for focusing under low light or low-contrast conditions

Advanced Options Settings and Auto Save settings

Equipped with Big Size LCD Display Screen, Standard PC synchronous Interface

 

Compatibility: suit for Pentax T-PPL like AF-360FGZ, AF540FGZ II, etc.

Guide Number: GN58@ ISO100，105mm

Zoom Range: 20-105mm

Recycle time: 3-5 seconds

Function: Master/Slave/S1/S2/ TTL/M/ Multi Mode 

AF-assist beam: Yes

Firmware Upgrade: Yes