Roberts and UsedPhotoPro will be closed Monday December 25th. Online orders may still be placed but won't process to ship until we open again at 9am December 26th.
Guide number (148ft/ISO 100) in manual mode, seven-step adjustment from 1/1 to 1/64, approx. 2.6 - 26.3 ft. effective flash range, bounce head. Requires 4 AA batteries.
The AF540FGZ Electronic-Flash unit features a large guide number of 54 (at ISO 100) and provides a variety of advanced flash applications, including advanced P-TTL auto flash, high-speed synchronisation and wireless P-TTL auto flash (when mounted on a Pentax SLR camera). When mounted on a Pentax auto-focus SLR (after the Z-10 and including digital format models) equipped with an FA-, FA J-, DFA- or DA- series lens, the AF540FGZ automatically adjusts its angle of discharge to the lens' focal length. The AF540FGZ auto-flash unit also features a newly provided 'Digital' position on the focal-length conversion scale of the zoom head which can accommodate digital SLRs, Bounce Flash function with adjustable angles of -10 to 90 degrees vertically and up to 180 degrees horizontally, and Power-zoom flash head to cover angles of view for 24mm to 85mm lenses (in 35mm format). It is compatible with a range of batteries, and is able to run on either 4x AA alkaline batteries, 4x AA lithium batteries or 4x AA Ni-MH batteries. We advise using rechargeable batteries. External LCD indication - Format; Flash mode; Zoom; Channel; ISO speed; Discharge level compensation; Spotbeam; F number; Discharge level; Wireless mode; Bounce flash warning; Sync mode; Discharge distance; Out-of-coupling-range warning. LED illumination available
P-TTL mode with preflash allows for more accurate strobe photography
Wireless P-TTL flash is available when used with the MZ-S, ZX-L, *ist D
High speed on camera and high speed wireless flash is available in P-TTL modes
Flash exposure compensation through a simple control dial
Standard TTL flash is available when used with Pentax TTL flash enabled camera bodies
Auto and Manual modes for more creative control or use with non-TTL 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