The Pentax AF-540FGZ II has different features 28 seals, including the hot shoe, that enable a reliable weather-resistant digital imaging system. This unit has a guide number of 177 at ISO 100 and 85mm along with a 35mm equivalent zoom range of 24-85mm, though the auto zoom function is compatible with smaller format Q-series mirrorless cameras, APS-C DSLRs, and medium format 645-series digital cameras. Also, with the use of a built-in diffusion panel the coverage can be extended to 20mm. Another benefit of this flash is tilt from -10 to 90° and rotation 135° to the left and 180° to the right for complete bounce functionality. The AF540FGZ II has wireless master and slave TTL capabilities with access to 4 channels. It utilizes an optical pulse to transmit information and trigger flash units up to 13.1' away. Also, this unit can be set as a master, control, or slave unit and has access to a contrast control sync setting that enables the adjustment of the output of multiple flashes from a single unit.
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The AF540FGZ II has wireless master and slave TTL capabilities with access to 4 channels. It utilizes an optical pulse to transmit information and trigger flash units up to 13.1' away. Also, this unit can be set as a master, control, or slave unit and has access to a contrast control sync setting that enables the adjustment of the output of multiple flashes from a single unit. An added feature for this flash is a constant LED light with 5 output settings for use during video, as an AF assist light, or as simply another light for your subject. Other settings include a multi-flash mode for stroboscopic photography as well as slow, high-speed, first and second curtain sync. Additionally, the AF540FGZ II runs on 4 AA batteries with a recycle time of 2.6-26.2 seconds and it comes with a case and stand. Creative control modes include first-curtain sync, second-curtain sync, high-speed sync, and contrast control Rotates from 180° right to 135° left with a lock at 0° and click stops Tilts from +90° to -10° with stops at +90°, +75°, +60°, 45°, 30°, 0°, and -10° Recycle time: NiMH/3 sec - Alkaline & Lithium/5 sec Flash head automatically controls zoom from 24mm-85mm (full-frame) with compatible cameras and autofocus lenses Wide-angle panel pulls out of flash head to expand coverage to a 20mm angle of view in full-frame format Multi-flash mode for up to 100 flashes Effective range of 2.6-26.2' AF-assist beam for focusing under low light or low-contrast conditions Daylight balanced flash for use outside without the need for gels or filters Auto power off after 3 minutes of non-operation or after 1 hour while in wireless mode LCD panel is backlit for use in poor lighting conditions Runs on 4 alkaline, lithium, or Ni-MH AA batteries |
Mount |
Shoe |
Guide No. |
177.17'; (54 m) ISO100 |
Angle of Coverage |
31° - 78° Horizontal |
Vari-Power |
1/1 - 1/256 |
Bounce Head |
+90 to -10° |
Swivel Head |
315° |
Coverage |
20 - 85 mm (Full Frame) |
Distance Range |
2.62 to 26.25' (0.8 to 8.0 m) at f/5.6 |
Zoom Head |
Full Frame: 24 - 85 mm |
Recycle Time |
Approximately 3 - 5 Seconds |
Flash Duration |
1/1200 - 1/20000 sec |
Flash-Ready Indicator |
Yes |
Compensation |
-4 EV to +2 EV (in 1/3 and 1/2 EV steps) |
Wireless Operation |
Method: Optical pulse |
Wireless Communication Channels |
4 Channels |
Power Source |
4x AA Alkaline, Lithium, Rechargeable NiMH Batteries |
Dimensions (W x H x D) |
3.0 x 4.4 x 4.3 / 76.2 x 111.8 x 109.2 mm |
Weight |
12.35 oz / 350.12 g |
Whats in the box? |
Pentax AF540FGZ II Flash Flash Case O-AC141 |
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