PRODUCT FEATURES

• Wireless Functionality with 4 Channels
• Full Manual and P-TTL Exposure Control
• Guide Number: 177' at ISO 100
• Effective Range: 2.6-26.2' at f/5.6
• Weather-Resistant Construction
• Rotates 315° & Tilts +90 to -10°
• Recycle Time: 3-5 seconds
• Creative Control Modes
• LED Continuous Light
• AF-Assist Beam

OVERVIEW

The Pentax AF540FGZ II Flash is an on-camera flash that is compatible with Pentax DSLR cameras. The AF540FGZ II has a guide number of 177' at ISO 100 and an effective range of 2.6 to 26.2'. Additionally, it features an all weather construction with 28 seals that pairs with Pentax weather-resistant cameras for safe operation in all conditions.

This flash features wireless functionality with access to 4 channels. It utilizes an optical pulse to transmit information and for triggering additional flash units up to 13.1' away. The AF540FGZ II can be set as a master, control, or slave unit and is able to use both manual and P-TTL while in wireless mode.

Full manual and automatic P-TTL controls are available on this flash. Full manual mode features nine steps of adjustment from full 1/1 power to 1/256 power. While in P-TTL mode, flash output compensation can be applied from -4 to +2 stops in either 1/3 or 1/2-step increments.

Additional creative control modes allow for specific effects to be created using the flash. For example, high-speed sync allows you to use faster shutter speeds than the camera's rated flash sync speed. Also, the LED light can be used as a continuous light source for video and long exposures.

Included with the AF540FGZ II are the O-AC141 Case for storage and a stand for setting up the flash off-camera.

• 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
• 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

SPECIFICATIONS

Mount Shoe
Guide No. 177.17' (54 m) ISO100
Exposure Control Manual/TTL
Angle of Coverage 31° - 78° Horizontal
Wide-Angle Adapter: 98° Horizontal 23° - 60° Vertical
Wide-Angle Adapter: 85° Vertical
Vari-Power 1/1 - 1/256
TTL Dedication Yes
Bounce Head Yes, +90° to -10°
Swivel Head Yes, 315°
Coverage 24 mm - 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 mm - 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 Transmission Method: Optical pulse
Distance: Up to 13.12' / 4.0 m
Wireless Communication Channels 4 Channels
Power Source 4x AA Alkaline, Lithium, Rechargeable Ni-MH Batteries
Dimensions (WxHxD) 3.0 x 4.4 x 4.3" / 76.0 x 113.0 x 108.0 mm
Weight 12.35 oz / 350 g