Pentax AF540FGZ Flash for Pentax Digital SLR Cameras

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Pentax AF540FGZ Flash for Pentax Digital SLR Cameras

Technical Information
Flash Modes
  • P-TTL
  • TTL
  • Automatic
  • Manual

  • Guide Number
  • 45m/148ft at ISO 100 (50mm Zoom-head Setting)
  • 54m/177ft at ISO 100 (85mm Zoom-head Setting)


  • Flash Coverage
  • 20mm to 85mm

  • Flash Recycle Time
  • 6Second Approximate - Alkaline

  • Flash Range
  • 2.6ft to 26.2ft Approximate f/5.6 Lens - ISO 100

  • Flash Synchronization
  • 1/1200 to 1/20000

  • Autofocus Assist
    AF Assist Beam Cover - Red beam emitted under low light or low-contrast conditions

    Light Angle
  • 85 degrees Vertical (Flash)
  • 98 degrees Horizontal (Flash)

  • Interfaces/Ports
    Interfaces/Ports
  • 1 x Hot Shoe

  • Battery Information
    Batteries
  • 4 x AA LR6 Alkaline Supported
  • 4 x AA FR6 Lithium Supported
  • 4 x AA Nickel-Metal Hydride (NiMH) Supported
  • 4 x AA Nickel-Cadmium (NiCd) Supported


  • Battery Life
  • 200 Flash Approximate - Alkaline
  • 250 Flash Approximate - Nickel hydroxide (Ni-MH)
  • 350 Flash Approximate - Lithium


  • Power Description
    Power Source
  • Battery

  • Physical Characteristics
    Dimensions
  • 5.6in Height x 3in Width x 4.2in Depth

  • Weight
  • 13.