Compare Pentax AF-540 FGZ TTL Flash to Ikelite AF35 Flash

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). Less

The AutoFlash AF35 provides automatic exposure by mimicking the duration of the camera's built-in flash. The AutoFlash AF35 also features six manual power settings. For use with compact point-and-shoot style camera systems. The AutoFlash AF35 is compatible with pre-flash camera systems only. Refer to your camera's instruction manual to determine whether you have a compatible pre-flash system. Less