Pentax AF-540FGZ II Flashgun

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Product Overview

  • All Weather Construction
  • Compatible with Pentax P-TTL
  • Guide Number: 54 m at ISO 100 and 85mm
  • Zoom Range: 24-85mm (20mm with Panel)
  • Tilts from -10 to 90°
  • Rotates 135° Left & 180° Right
  • Wireless Master/Slave TTL Functionality
  • LED Light with 5 Output Settings
  • Multi Flash Mode & Contrast Control Sync
  • Slow, High-Speed, 1st & 2nd Curtain Sync
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Complete your durable, rugged All Weather camera setup with the P-TTL capable Pentax AF-540FGZ II Flashgun which features 28 seals, including the hot shoe, that enable a reliable weather-resistant digital imaging system. This unit has a guide number of 54 m 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 4 m 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.

Key Features of the Pentax AF-540FGZ II Flashgun

  • 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
    Right: 180°, 150°, 120°, 90°, 60°, and 30°
    Left: 135°, 90°, 60°, and 30°
  • 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 0.8 to 8 m
  • 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 alkaline, lithium, or Ni-MH AA batteries

  • MPN - 30456
  • GTIN - 027075233010
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Guide No. 54 m at ISO 100 and 85mm
TTL Dedication Yes
Vari-Power 1/1 - 1/256
Bounce Head +90 to -10
Swivel Head 315
Coverage 31 - 78 Horizontal
Wide-Angle Adapter: 98 Horizontal
23 - 60 Vertical
Wide-Angle Adapter: 85 Vertical
Range Zoom Range: 24-85mm (20mm with Panel)
Distance Range: 0.8 to 8 m at f/5.6
Recycle Time Approximately 3 - 5 seconds
Compensation -4 EV to +2 EV
(in 1/3 and 1/2 EV steps)
Wireless Wireless Master/Slave TTL Functionality
Operation Method: Optical pulse
Operation Distance: Up to 4 m
Communication Channels: 4 Channels
Power Source AA
(Alkaline, Lithium, Rechargeable NiMH Batteries) x4
Mount Shoe
Dimensions (WxHxD) 7.6 x 11.3 x 10.8 cm
Weight 0.35 kg
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What’s In The Box
  • Pentax AF-540FGZ II Flashgun
  • Flash Case O-AC141
  • Flash Stand for AF360FGZ II/AD540FGZ II Flashes
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