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You are here : Home > Pentax AF-540FGZ Flash Unit

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Pentax AF-540FGZ Flash UnitBookmark and Share

Categories: Flash / Speedlites and Lighting Specials, Pentax Flashes,
Pentax AF-540FGZ Flash Unit
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Total AU$ 

* All prices include GST
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Product Summary

  • Tilt and Swivel Option
  • Guide number of 54 (at ISO100/m) 
  • High Speed Synchronization
  • Auto Zoom 
  • Wireless P-TTL Auto Flash 
  • Auto Discharge-Angle Adjustment 
  • Requires 4 AA Batteries
  • 12 Months Genuine Australia Warranty from CR Kennedy

The automatic TTL flashgun TTL AF 540 FGZ has a large guide number of 54 (at ISO100/m) with tilt and swivel option, auto zoom and high speed synchronization. It is capable of wireless P-TTL auto flash with PENTAX digital SLR cameras to accommodate the proper lighting luminance in every shot. The Auto discharge-angle adjustment helps adjust angle of discharge with respect to the focal length of the lens. It requires 4 AA batteries.

Product Features in Detail

Automatic TTL flashgun with tilt and swivel option
AF 540 FGZ is an automatic TTL flashgun with tilt and swivel option, auto zoom and high speed synchronization. Featuring a large guide number of 54 (at ISO100/m), the AF540 FGZ auto zoom flash offers a variety of advanced flash applications, including P-TTL auto flash, high-speed synchronization and wireless P-TTL auto flash with PENTAX digital SLR cameras.

Large guide number
Despite its compact dimensions and clip-on design, the AF540FGZ auto flash offers a large guide number of 54 (at ISO100/m) to accommodate a wide range of flash applications. 

Advanced auto flash functions
The AF540FGZ features a variety of flash functions, including advanced P-TTL auto flash in which a pre-discharge from its spot-beam projector is detected by the camera’s light sensor to accurately control the main discharge level needed for proper illumination of the subject. Other functions include TTL auto flash, auto flash, manual flash, high-speed synchronization and wireless P-TTL. 

Auto discharge-angle adjustment
When mounted on a PENTAX autofocus 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.* (* This automatic function may not be available for certain combinations of a camera body and a lens.) 

“Digital” position
“Digital” position newly provided on the focal-length conversion scale of the zoom head to accommodate digital SLRs.

Bounce flash function, with adjustable angles
Bounce flash function, with adjustable angles of –10 to 90 degrees vertically and up to 180 degrees horizontally.

Power-zoom flash head
Power-zoom flash head to cover angles of view for 24mm to 85mm lenses (in 35mm format). - Built-in wide-angle panel that slides out to cover 20mm angle of view (in 35mm format).

Built-in catch-light panel
Built-in catch-light panel, which is useful and effective in portrait photography

External power supply
External power supply with the optional TR Power Pack II.

Auto power-off function
Battery-saving auto power-off function (user cancellation possible). 

Included in the Box

     Pentax AF-540FGZ Flash Unit
     12 months Warranty from CR Kennedy Australia

Warranty Information 

     This Pentax AF-540FGZ Flash Unit comes with 12 months Warranty from CR Kennedy Australia.
     Our products are sourced from authorised Australian suppliers and therefore come with genuine Australian warranty.
     Camera Warehouse does not participate in 'Grey Market' or 'Parallel Import' activities.


Tech Specs

Type Clip-on, P-TTL auto zoom flash
Flash Modes P-TTL auto, TTL auto, auto, manual
Bounce Head Yes, (-10º, 0º, 30º, 45º, 60º, 75º, 90º)
Zoom Head 24-85mm (20mm w/ wide angle diffusor, flash senses focal length automatically)
Focal Length 24-85mm (20mm w/ wide angle diffusor)
Flash Range 2.6' – 26.3' (GN 54, ISO 100, F5.6)
Color Temp Daylight
Other Functions Auto Power Off, Test Discharge, 1s modeling flash, P-TTL wireless flash, wide angle diffusor, catchlight panel, autofocus spotbeam
Dimensions 3.0" x 5.6" x 4.2"
Notes TR Power Pack 3 (optional) available as an external power source for the AF500FGZ flash.
Flash Control TTL-series-control auto flash, manual flash
Flash Exposure Compensation In P-TTL mode, -3.0 to +1.0 steps (0.5-steps increments)
Swivel Head Right: (0º, 30º, 60º, 90º, 120º, 150º, 180º)
Left: (0º, 30º, 60º, 90º, 135º)
Discharge Angles 31-78 degrees horizontal, 23-60 degrees vertical (98 degrees horizontal, 85 degrees vertical with wide angle diffusor)
Guide Number 178.2 at ISO 100/ft (54 at ISO 100/m)
Interval Battery Life Alkaline batteries - approx 6s interval, 200 full discharges
Lithium batteries - approx 6s interval, 350 full discharges
NiMH batteries - approx 6s interval, 250 full discharges
TR Power Pack 3 - approx 4.5s interval, 700 full discharges
Sync Modes Leading curtain sync, Trailing curtain sync, Contrast control sync, High-speed sync
Power Supply Four AA size batteries (alkaline, lithium, NiMh), TR Power Pack 3 available (optional)
Weight W/o Batteries 13.04 oz.



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