AUTO ZOOM ELECTRONIC FLASH UNIT
OPERATING MANUAL
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FOR SAFE USE OF YOUR FLASH UNIT
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Precautions for Your Flash Unit
■Cautions Regarding Batteries
Table of Contents
Names of Parts
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■Major bundled items
Opening of
the stand
■LCD Panel Indicator
MZ-S
Auto Check Display
Inserting the Batteries
■Using the Optional External Power
Source
Mounting to Camera
Turning the Power On
Ready lamp
■Charging the AF540FGZ with the Optional External Power Source
■Switching the Charging Mode
■Auto Power Off Function
■Quick Power On Function
Select Button (S)/Adjustment Dial Functions
● When using multiple flash units set to P-TTLor
same time, use the camera’s exposure
compensation
Connected Flash Mode
Adjustment Range
Camera Format and Flash Coverage Angle
2 Zoom position (Flash coverage angle) setting
Auto zoom (A.Zoom):
Lens Types
*ist D series
DA, D FA, FA J
Zoom Positions for Each Format
* With the wide-anglepanel
35mm camera
645 camera
67 camera
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DA, D FA, FA J, FA, F
35mm autofocus single
Focal length
*ist, MZ-L/ZX-L/MZ-6
20 mm and over, less
Using the Flash Modes
■P-TTLAuto Flash
■TTL Auto Flash
■Auto Flash
1 Turn on the power switch
2 Press the flash mode button (MODE) until (A) is displayed on the LCD panel
3 Set the aperture value and ISO
Press the select button (S) so that (f/stop) on the LCD panel blinks
Turn the adjustment dial to set the aperture value
■Manual Flash
645, LX, MZ-M/ZX-M
Using the Sync Mode
■Leading Curtain Sync Mode
■Trailing Curtain Sync Mode
■High-SpeedSync Mode
●Please read the camera operating manual for camera operation
High-speed
■Contrast Control Sync Flash
With a single flash
With contrast control sync flash
Advanced Functions
■Wireless Mode
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Using the AF540FGZ in Combination with a Built-inFlash Unit
Confirm that the AF540FGZ and
built-in
flash unit are fully charged, and take the photograph
A lamp on the AF540FGZ will blink
Turn the camera off and then attach the AF540FGZ to the hot shoe of the camera
When Attaching the AF540FGZ to the Camera for Control Flash
(Preparation of Flash Unit Attached to Camera)
(Preparation of Separated Flash Unit)
Place the other AF540FGZ in the desired
position
the camera has been set to
(Photographing)
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Slide the setting switch back up to the (white
dot)
Wireless High-SpeedSync Photography
(Using the AF540FGZ in Combination with a
Built-inFlash Unit)
3other than P-TTL
● Set the zoom position with (M.Zoom) regardless of the lens you use
4 Enable the built-inflash unit of the camera and
display ( ) on the LCD panel
5 Set the sync mode switch of the wireless flash
(Using the AF540FGZ in Combination with
another AF540FGZ)
MASTER: For using both flash units as main flashes
Confirm that both flash units are fully charged, and take the photograph
Place the other AF540FGZ in the desired position
the LCD panel
Press the channel button (CH) and select the
same channel that the flash unit attached to the camera has been set to
■Slave
6tabletop, chair, etc
7 Check that the ready lamp is lit, then take the picture
●When the built-inflash or the external flash
●The AF540FGZ will fire at the same time that the camera’s flash fires
The slave unit will turn off automatically after about 1 hour of
■Slave Mode Setting
■Slow-Speed-SyncPhotography
■Bounce Flash
●A click stop is provided for each bounce angle
●When using bounce flash, ( ) will be displayed on the LCD panel
The effective flash range will blink only when the bounce angle is set at
It is recommended to set the bounce angle at
P-TTL,TTL Auto Flash Photography
Manual Flash Photography
■AF Spotbeam
■Wide-AnglePanel and Catchlight
Panel
Catchlight panel
Wide-anglepanel
■Modeling Flash/Test Flash
■Connecting the AF540FGZ with the
Extension Cord
Hot shoe adapter FG
Extension cord F5P
Supported Functions for Pentax Cameras
■Cameras that Support Each Flash Mode
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■Cameras that Support Each Sync Mode
■Cameras that Support Wireless Mode
■Cameras that Support Slow-Speed-SyncMode
■Functions Related to Each Flash Mode
1. Cameras that Support P-TTLAuto Flash Mode
Flash Mode
(P-TTL) P-TTLauto
(TTL) TTL auto
(A) auto flash
2. Cameras that Support TTL Auto Flash Mode
<Film cameras (35mm autofocus single lens reflex cameras)
(A), (B), (C)
(C)
<Film cameras (medium format)
(D), (E), (F)
(D)
(E)
(F)
<Film cameras (35mm manual focus single lens reflex cameras)> Type G: LX
(G), (H)
(G)
(H)
3. Cameras that Does not Support
P-TTL
and TTL Auto Flash Mode
(B), (C), (D)
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■Sync Mode Restrictions
Under the following condition, the flash mode automatically switches to
) is displayed on the LCD panel only in the following case:
Contrast Control Sync Photography
Flash Unit
The flash mode automatically switches to
● ( ) is displayed on the LCD panel only in the following case:
High-Speed-SyncMode Photography
Exposure Modes Not Supported
by High-SpeedSync Mode
, , , , , , P
Slow-Speed-SyncPhotography Restrictions
Exposure Modes Not Supported by
Slow-Speed-SyncPhotography
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■Precautions When Photographing with a Slave Flash
Flash Effective Range
■Calculating the Flash Effective
Range
Display of Flash Effective Range
■Guide Number (GN)
Flash
High-SpeedSync Guide Number
*With the wide-anglepanel attached
Shutter
speed
85mm
■P-TTLand TTL Auto Flash Effective Range
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Optional Accessories
Specifications
(ISO 400)
Flash duration (1/2 peak each)
Recycling time/Total number of flashes
Consecutive Discharge Flash Coverage Angle
Color temperature
Flash modes
Flash exposure compensation
Flash output setting
Flash sync mode
Wireless flash
Warranty Policy
For customers in the USA
STATEMENT OF FCC COMPLIANCE
For customers in Canada
Pour les utilisateurs an Canada
Information on disposal for users
PENTAX Corporation
PENTAX Europe GmbH
(European Headquarters)
PENTAX U.K. Limited
PENTAX France S.A.S