Pentax AF-540 FGZ II Speedlight

P-TTL mode with pre-flash allows for more accurate flash photography.
Wireless P-TTL flash is available when used with PENTAX DSLR cameras that support wireless flash operation.
On-camera and wireless high-speed flash sync is available in P-TTL modes.
Flash exposure compensation is easy through a simple control dial.
Bounce flash function, with adjustable angles of –10 to 90 degrees vertically and up to 180 degrees horizontally.
Includes an autofocus assist beam for focusing in low light or low contrast situations.
Auto and Manual modes allow for use with non-TTL PENTAX camera bodies.
LCD display shows the effective range of the flash in P-TTL, TTL and AUTO modes.
Modeling light feature strobes the flash for one second, so the photographer can check for unwanted shadows or highlights.
Includes an autofocus assist beam for focusing in low-light or low-contrast situations.
External power supply with the optional TR Power Pack-3