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Pentax AF540FGZ II
Pentax AF540FGZ II Pentax AF540FGZ II Pentax AF540FGZ II

Pentax AF540FGZ II

428.00 €

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Garantija: 24 mėn.
Gamintojas: Pentax

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Technical Specifications

Clip-on, P-TTL auto zoom flash unit with series control

Guide No.

Maximum 54 (ISO 100/m).

In manual mode, nine-step adjustment from M1/1 to M1/256

Flash duration

(M1/1) flash: Approx. 1/1200 sec. (P-TTL) Fastest duration time: Approx. 1/20000 sec

Flash Coverage Angle

Auto zoom enabled with autofocus compatible camera and lens combination.

Color temperature


Effective flash range

Approx. 0.8 m - 8.0 m (Guide No. 45, ISO 100, F/5.6)

AF spot beam

LED white beam emitted under low light or low-contrast conditions.

Effective range: Approx. 1m - 7m (According to our testing conditions.)

ISO range compatibility

ISO 25 - 1600

Flash modes

P-TTL auto, manual, multi, wireless (P-TTL/Manual)

Flash output compensation

In P-TTL mode, -4.0 to +2.0 levels (1/3, 1/2 step)

Flash output setting

Wireless flash (P-TTL): (1/1➝2/3➝1/2➝1/3)

Manual flash: (1/1➝1/2➝1/4➝1/8➝1/16➝1/32➝1/64➝1/128➝1/256)

Wireless flash (Manual): (1/1➝1/2➝1/4➝1/8➝1/16➝1/32➝1/64➝1/128➝1/256)

Multi flash: (1/4➝1/8➝1/16➝1/32➝1/64➝1/128➝1/256)

LED beam mode: (Auto➝1/1➝1/2➝1/4➝1/8➝1/16)

Multi flash

Number of the flash : 2 - 100

Flash frequency : 1 - 200 Hz

Flash sync modes

Leading curtain sync, Trailing curtain sync, Contrast control sync, High-speed sync

Wireless flash

(Control system) Optical pulse transmission

(Wireless position) Master (M), Control (C), Slave (S)

(Channels) 1 to 4

Compatible modes: P-TTL, manual (M)

Effective range: Approx. 4 m (When set to SL1, According to our testing conditions.)

Bounce flash

Vertical and horizontal bounce possible, click stops provided, lock provided at 0°.

Rightward: 0°, 30°, 60°, 90°, 120°, 150°, 180°

Leftward: 0°, 30°, 60°, 90°, 135°

Upward: 0°, 30°, 45°, 60°, 75°, 90°

Downward: 0°, -10°

Power saving

Automatic power-off: After approx. 3 min. of non-operation with the power on.

After 1 hour in wireless mode.

Quick power on: By pressing the camera’s shutter release button halfway.

Red-eye reduction

Operates with autofocus cameras equipped with red-eye reduction feature.

Wide-angle panel

Slide out manually to cover wide-angle.

LCD panel illumination

LCD panel illumination button illuminates the LCD panel for about 10 seconds or press the button again to turn it off.

Power source

Four AA batteries, (Alkaline (LR6), Nickel-Metal Hydride (Ni-MH), or Lithium (FR6))

Dimensions and weight

76 mm (W) × 113 mm (H) × 108 mm (T) (3.0'' × 4.4'' × 4.2'')

Approx. 350 g (12.3 oz.) without batteries



AF540FGZ II auto flash units for PENTAX lens-interchangeable digital cameras, featuring weather-resistant construction and LED light for movie and still-image recording

AF540FGZII is a weather-resistant auto flash unit for PENTAX lens interchangeable digital camera with a maximum guide number of 54 at ISO 100/m. This unit is designed to provide solid, dependable operation even under harsh outdoor conditions including rain and fog.

Dependable weather-resistant construction for demanding outdoor shooting

With 28 seals applied to crucial parts of the unit body including the hotshoe, these flash units feature highly dependable weather-resistant construction. By coupling one of them with a camera body and a lens that feature the same weather-resistant construction, the user can create a highly reliable weather-resistant digital imaging system that assures solid performance even in harsh outdoor conditions, such as in the rain or at locations subject to splashes and dust.

LED light convenient for movie and still-image recording

Both models incorporate a newly designed, high-intensity fixed-light LED light in their body. This white LED light comes in handy not only for close-distance movie recording, but also for still-image shooting requiring extended exposures. It also functions as a catch light in portraiture and an AF assist light in the dark.*

* The AF assist light function is available with 645D, K-r, K-5, K-30, K-5 II, K-5 II s, K-50 and K-500 camera bodies. The camera’s firmware must be updated to the latest version to support this function.

User-friendly function settings

The user can customize the flash operation by presetting as many as nine different flash functions to their preference, including the on/off of the catch-light function using the LED light and the choice of the flash discharge mode in still-image shooting.

Versatile flash control system

Both models provide a variety of flash discharge modes,** ranging from the advanced P-TTL auto flash mode in which the flash’s preliminary emission is detected by the camera’s light sensor to accurately control the main discharge level for proper exposure, to manual flash, high-shutter-speed synchronization and wireless P-TTL auto flash.

** Available flash discharge modes may vary depending on the camera body in use.

Other features

-Bounce flash function, adjustable to angles of -10 to 90 degrees vertically and up to 180 degrees horizontally 
-Power-zoom flash to cover angles of view from 24mm to 85mm lenses (in 35mm format) 
-Built-in wide-angle panel that slides out to cover 20mm angle of view (in 35mm format)
-Automatic setting of discharge angle in combination with a PENTAX lens-interchangeable digital camera body 
-Multi flash emission function available
-Shorter battery recharge time, in comparison to conventional models


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