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Pentax AF-540FGZ - User Manual

Pentax AF-540FGZ
96 pages
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AUTO ZOOM ELECTRONIC
FLASH UNIT
OPERATING MANUAL
Please read this operating manual carefully first for proper use.
01_Cover_1.fm Page 0 Friday, March 17, 2006 3:38 PM
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Pentax AF-540FGZ Specifications

General IconGeneral
Power Source4 x AA batteries
Flash Coverage24-105mm
Bounce Angle (Tilt)Up: 90°
Flash ModesManual
WirelessYes, Wireless P-TTL
TTL ModeP-TTL
Guide Number54 m / 177 ft at ISO 100 and 105mm position
Swivel AngleRight: 180°, Left: 180°

Summary

FOR SAFE USE OF YOUR FLASH UNIT

WARNING

This mark indicates precautions that, if not followed, could result in serious injury to the user.

CAUTION

This mark indicates precautions that, if not followed, could result in minor or medium injury to the user or damage to the equipment.

Precautions for Your Flash Unit

Cautions Regarding Batteries

Battery Types and Handling

Use 4 AA batteries; do not mix types; insert correctly; keep warm in low temps; remove if hot/smoking.

LCD Panel Indicator

Indicator Functions

Explains indicators for Zoom, Format, Flash mode, Exposure compensation, ISO, Bar graph, Range, AF spotbeam, Sync mode, Bounce flash warning.

Indicator Details

Explains indicators for Flash output adjustment, f/stop, Channel, and Wireless mode.

Inserting the Batteries

Types of Batteries

Supported Battery Types

Uses 4 AA-size alkaline, lithium, or Ni-MH. Not compatible with Ni-Mn or Ni-Cd.

Mounting to Camera

Charging the AF540 FGZ with the Optional External Power Source

Select Button (S);Adjustment Dial Functions

Camera Format and Flash Coverage Angle

Zoom position (Flash coverage angle) setting

Auto Zoom (A.Zoom)

Enables automatic setting of flash coverage angle based on camera exposure timer and lens.

Manual Zoom (M.Zoom)

Enables manual setting of flash coverage angle; select when camera/lens is set to manual focus.

Using the Flash Modes

P-TTL Auto Flash (P-TTL)

Fires pre-flash to measure subject conditions; sets main flash output for accurate results.

TTL Auto Flash (TTL)

Adjusts flash output based on reflected light for correct exposure.

Auto Flash (A)

Uses built-in sensor for automatic flash output adjustment; for non-P-TTL/TTL Auto compatible cameras.

Manual Flash (M)

Set flash output manually (1/1 to 1/64) for manual exposure photography.

P-TTL Auto Flash

Procedure for P-TTL Auto Flash

Turn on flash, select P-TTL mode, set zoom position, confirm range and ready lamp.

TTL Auto Flash

Procedure for TTL Auto Flash

Turn on flash, select TTL mode, set sync mode, set zoom position, confirm range.

Auto Flash

Procedure for Auto Flash

Turn on power, select Auto mode, set aperture/ISO, confirm range, set zoom, take picture.

Manual Flash

Procedure for Manual Flash

Turn on power, select Manual mode, set zoom position, set lens aperture according to distance.

Using the Sync Mode

High Speed Sync Mode

Enables sync with shutter speeds faster than X-sync speed; effective for fill-flash.

High-Speed Sync Mode

High-Speed Sync Procedure

Turn on camera, attach flash, set sync mode to high-speed sync.

Contrast Control Sync Flash

Advanced Functions

Wireless Mode

Take photos wirelessly in P-TTL mode; combine with built-in or other flash units.

Notes on Wireless Flash Control

Explains communication between flash units: shutter press, control flash, pre-flash, main flash.

Using the AF540 FGZ in Combination with a Built-in Flash Unit

Setting Wireless Mode and Channel

Registering Flash Unit on Camera

Set wireless mode/channel, turn camera off, attach flash, set power to WIRELESS, select SLAVE, set channel.

Camera Mode and Flash Operation

Set camera to W(WIRELESS); confirm charge; flash output setting and exposure compensation in P-TTL.

When Attaching the AF540 FGZ to the Camera for Control Flash

Preparation of Separated Flash Unit

Setting Separated Flash Unit

Place flash unit, set power to WIRELESS, select SLAVE, set channel to match camera unit.

When Using Both an AF540 FGZ Attached to the Camera and a Separated Flash Unit as Main Flashes

Preparation of Flash Unit Attached to Camera

Set wireless mode/channel, attach flash, set power to WIRELESS, select MASTER, set channel.

Wireless High-Speed Sync Photography

Camera Settings for Wireless HSS

Required shutter speed and exposure modes for high-speed sync photography.

Wireless HSS Procedure and Notes

Wireless HSS Procedure

Set flash mode to P-TTL, set zoom, enable built-in flash, set sync mode, set camera exposure/shutter speed.

Slave Mode Operation

Wireless Slave Photography

Take photos wirelessly in auto or manual mode; combine with built-in or other flash units.

Slave Mode Setting

Slow-Speed-Sync Photography

Slow-Speed-Sync Explanation

Balances subject and background exposure in night/evening settings using slow shutter speeds.

Bounce Flash

AF Spotbeam

AF Spotbeam Function

Built-in red spotbeam projector assists autofocus in dim/low-contrast conditions.

Using AF Spotbeam as Focusing Aid

Procedure: Set power ON, select SB mode, set camera to autofocus, press shutter halfway.

Modeling Flash;Test Flash

Connecting the AF540 FGZ with the Extension Cord

Supported Functions for Pentax Cameras

Cameras Supporting P-TTL Auto Flash

Lists cameras supporting P-TTL and notes on auto-switching, sync modes, and display behavior.

Cameras Supporting TTL Auto Flash

TTL Auto Flash Support

Lists cameras supporting TTL Auto Flash and notes on sync modes, auto flash, and manual flash.

Auto Flash Support

Cameras that Support Each Sync Mode

Cameras that Support Wireless Mode

Wireless Mode Support

Lists digital and film cameras supporting wireless mode; notes on slave mode and combinations.

Cameras that Support Slow-Speed-Sync Mode

Slow-Speed-Sync Support

Lists cameras supporting slow-speed-sync and notes on limitations and conditions.

Functions Related to Each Flash Mode

Cameras Supporting TTL Auto Flash Mode

Cameras Supporting TTL Auto Flash Mode

Contrast Control Sync Photography

High-Speed Sync Mode Photography

Camera Settings for Wireless HSS

Required shutter speed and exposure modes for high-speed sync photography.

HSS Camera Compatibility Notes

Lists cameras and notes on incompatible exposure modes for high-speed sync.

Slow-Speed-Sync Photography Restrictions

Precautions When Photographing with a Slave Flash

Flash Effective Range

Calculating the Flash Effective Range

Method to calculate max/min distance using guide number, aperture, and ISO.

Display of Flash Effective Range

Guide Number (GN)

Guide Number Table

Table of guide numbers based on ISO, camera format, and zoom position.

High-Speed Sync Guide Number

HSS Guide Number Table

Table of guide numbers for high-speed sync based on ISO, shutter speed, camera format, and zoom.

Specifications

Flash Type and Guide Number

Clip-on, TTL auto zoom flash with serial control; max guide number 54 (ISO 100/m).

Specifications

Flash Modes and Exposure Compensation

P-TTL auto, TTL auto, auto, manual; compensation -3.0 to +1.0.

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