Quantum Qflash T4d User manual

Qflash®4d
Digital Flash
Models T4d, X4d
Operating Instructions
Quantum Instruments
Designed and manufactured in the USA
For use with Quantum Turbo®,Turbo 2x2,
Turbo Compact, or Turbo Z Batteries

MOpen Flash (Test)
■ Option Button
LDown Button Up Button J
Modeling Light ●
Set Button G
Mode Button I
Flash
Indicator
Reflector Lock
Ring

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Section Description
1.0 INTRODUCTION
2.0 WARNINGS
3.0 SETTING UP Qflash
4.0 NEW FEATURES FOR PREVIOUS Qflash OWNERS
5.0 QUICK START
6.0 Qflash OPERATION WITH QUANTUM DEDICATED
QTTL ADAPTERS
7.0 MULTIPLE Qflash OPERATION - WIRED MODE
8.0 MULTIPLE Qflash OPERATION - WIRELESS MODE
9.0 EXPOSURE COMPENSATION OF Qflash
10.0 TYPICAL LIGHTING SITUATIONS
11.0 CUSTOMER SERVICE
Qflash models T4d and X4d provide professional quality lighting for both
digital and film cameras. Quantum’s proprietary QTTL®Adapters* dedi-
cate Qflash seamlessly to your camera. Also, many features of the Qflash
“Digitals” enhance lighting control for cameras without dedicated control.
While powerful and extremely versatile, Qflash operation is intuitive and
straightforward. Advanced features for most every lighting need can be
accessed or ignored as needed.
We highly recommend reading this entire instruction manual.
Whether or not you require all of Qflash’s capability now, you will
want to know it exists when the need arises.
*QTTL D- series adapters are optional for specific makes and camera mod-
els. Please consult your dealer or www.qtm.com for the latest availability.
1. INTRODUCTION
TABLE OF CONTENTS
•Disconnect external power before changing the flash tube, or
connecting or disconnecting to/from cameras, power packs,
or any other equipment.
•Operate only with a flash tube in the socket.
•DO NOTTOUCHTHE FLASHTUBE SOCKETWITH METAL OBJECTS.
•THIS IS A PROFESSIONAL INSTRUMENT. KEEP AWAY
FROM CHILDREN
•DO NOT ATTEMPT TO OPEN THE FLASH UNIT! DANGEROUS
HIGH VOLTAGE INSIDE!
•Repairs can be made only by a qualified Quantum service
representative.
2.WARNINGS AND CAUTIONS

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3.1 Inserting the Flash Tube
Match the red dot on the flash tube base with the red dot on the socket.
Push the flash tube in until it is seated snugly into the socket. Excessive
force is not required.
Replace the flash tube only with Quantum type QF30 or QF30uv for
Qflash model T4d. Qflash model X4d requires QF32 or QF32uv flash
tubes. Other flash tubes will not provide proper exposure, may not work
at all, or they may damage the Qflash.
3.2 Reflectors and Bare Bulb
Reflectors are secured by the
locking ring near the base of
the flash tube. Rotate the ring
in the directions shown in the
diagram to loosen or tighten the
reflectors.
When inserting a reflector, first slowly
rotate it until the notch in the reflector
“drops” fully into the reflector collar.
Then tighten the locking ring. If you don’t let the
reflector drop fully in before locking it may later
become loose.
Note to previous Qflash T, T2 ,X or X2 owners: There is no longer a
“Wide” or “Normal” position for the reflectors. The only position is
“Normal”. For wide angle coverage, use the included diffusers or option-
al QF67A or Soft Box QF68.
3.3 Bounce and Swivel Head
The head position is locked and can be changed
with a single button (see diagram). Press
and hold this button, then adjust the
head to the desired position.
Release the button, and slightly
move the head until it “clicks”
and locks in vertical and hori-
zontal planes.
3. SETTING UP Qflash

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3.4 Bracket Mounting
Qflash mounts with a 1/4-20 standard tripod thread to
brackets, light stands, and tripods. Many brackets
are made especially for Qflash by the popular
bracket manufacturers.
Quantum also has two optional brackets, mod-
els QF70US and QF70E. The instructions
below that describe mounting to
both of these brackets applies
also to other brackets, light
stands, and tripods.
Two types of 1/4-20 fasten-
ers and a friction pad are sup-
plied with Qflash. Place the
mounting pad between Qflash
and the bracket, insert one of
the fasteners and tighten. (If
the mounting surface has a
pad, the mounting pad is not
necessary). Note that brackets
vary in thickness. Always make sure
that the mounting knob screws into Qflash
at least two complete turns.
3.5 Connecting Qflash to a Camera
There are several ways to connect a Qflash to a camera, both wired and
wireless.
For wired connection use 1) a household two-prong sync cord (supplied)
to the sync connector of Qflash; 2) a QF or FW series TTL adapter; 3) Use
a D series QTTL adapter; or 4) use a QF53 Hot Shoe sync. Consult your
dealer or www.qtm.com for the latest TTL and QTTL adapter models.
Note: When using a household type two-prong cord, if you have difficulty
getting the sync signal to the flash, reverse the plug to match the camera’s
sync polarity.
3.6 Powering Qflash
Before turning on any power to Qflash always make all electrical connec-
tions first, both to the camera and to Turbo Batteries.
Plug the Qflash T4d cable into the output jack of any Quantum Turbo
Battery. For Qflash X4d, connect the power cable to a Qpaq system*.
Turn on Turbo or Qpaq power. Qflash will be powered up and ready to run.
If a “Check Turbo” or “Check Power” message appears on the Qflash dis-
play, turn off the Turbo or Qpaq, wait one second, and turn it on again. If
the message appears again, the power pack needs recharging.
If a “Reset Flash?” message appears in the Qflash display press any but-
ton, except the Mode Ibutton, to resume operation.

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The following features will be of interest to owners of older Qflash models:
•QTTL™ adapters provide full dedication (and more) to digital and
film cameras. - Section 6.0
•New Linked mode to set lighting ratios between Qflashes -
Sections 7.0 and 8.0
•New modeling lamp function for both modelsT4d and X4d.
Section 5.10.9
•Flash Indicator Lights - Sections 5.9.5 and 5.10.2
•Quick turn off - Section 5.10.8 If you are using the Qflash as an
on camera flash and want to disable the flash for a few shots you
can use the ‘quick turn off’ feature.
•Program mode now accepts up to 8 pre sets. - Section 5.8
•Easy Exposure Compensation. - Section 9.0
•New choices are available with the Option ■button. - Section 5.9
These include Flash Sensor Limit, Flash Counter, and Indicator Lights.
•Lighting tips - Section 10
4. NEW FEATURES FOR PREVIOUS Qflash OWNERS
If at any other time Qflash should behave strangely or not respond to com-
mands, it may be restored to factory settings. Refer to Section 5.10.7 to
force a reset. Note that in the event of a reset all operator data entered
(film speed, f/#, etc.) will be lost and must be entered again.
* Lumedyne or Norman systems may power Qflash X4d. See the sepa-
rate sheet enclosed for compatible model numbers.
3.7 Reflector Specifications
The ”normal” QF60 reflector is supplied with Qflash 4d. Other reflectors
are available as options from your dealer.
Approx. Angle Guide No. for ISO 200*
Reflector of Illumination QFT4d1QFX4d2QFX4d3
Normal QF60 55˚ 226ft / 72m 226ft / 72m 320ft / 100m
QF60 w/ flat diffuser 70˚ 128ft / 40m 128ft / 40m 180ft / 56m
QF67A Dome Diffuser 90˚ 128ft / 40m 128ft / 40m 180ft / 56m
QF62Bs/g Bare Bulb Reflector4 120˚ 90ft / 28m 90ft / 28m 128ft / 40m
QF63B Tele Reflector 20˚ 453ft / 143m 453ft / 143m 640ft / 202m
Notes
*Guide numbers vary according to surroundings.
Guide numbers can be higher in small rooms or lower in open spaces.
1QFT4d rated for 150 watt-seconds
2QFX4d rated for 200 watt-seconds
3QFX4d rated for 400 watt-seconds
4QF62 guide no. will vary greatly due to likely bounce light

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IMPORTANT! With digital cameras perform a custom white balance
prior to a shooting session. Otherwise, the camera will assume you
are using some unknown flash.
5.1 Controls
Qflash controls operate in predictable ways. Spend a moment to get the
feel of the controls.
The Mode I, Set G, and Option ■buttons select the type of features
or settings you want to change.
Mode Isets the flash operating mode, such as Automatic, Manual, TTL,
etc. Set Glets you pick parameters to change, such as f/, ISO, etc. After
you push Mode Ior Set G(one or more times) you see part of the dis-
play blinking. You then push the Up Jor Down Lbuttons to change the
blinking parameter or feature. After a few moments the display stops blinking.
Option ■lets you select other features such as Speaker ON/OFF,
Reflector type, Flash Indicators ON/OFF, etc. Press Option ■once or
twice, then Set Gone or more times, then Up Jor Down L. See Section
5.9 for more details about options.
The flash Test Mbutton fires the flash without taking a picture.
5.2 Display
Aperture numbers are displayed in 1/3 steps, in a range from f/2.0 to f/32,
like this: 2.0, 2.03, 2.07, 2.8, 2.83, 2.87......16, 163, 16 7, 22, 223, 227, 32.
ISO film speeds, Guide Numbers, and distances are shown as their
actual values.
Power settings are displayed in 1/3 steps from full power to 1/64th power
like this: 1/1, 1/1-, 1/2+, 1/2 ,1/2- ...... 1/32, 1/32-, 1/64+, 1/64.
Only parameters required for the particular mode in use are displayed.
Various symbols may also display, which will be explained with each fea-
ture later on.
The rest of Section 5 explains the basic operation of the Qflash, when
used as a single unit. Available modes are Manual, Automatic, Auto Fill,
TTL/QTTL, Program, or Strobo.
5. QUICK START

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5.3 Changing modes
To change from one mode to another:
Press Mode Ibutton. The flash mode
display will blink.
Use Up Jor Down Lbuttons to change
mode.
5.4 Changing settings in Manual mode
The camera exposure may be set to manual, or aperture or shutter
priority; however, Qflash will emit the fixed amount of light shown on
its display.
Press Set Gone or more times until the parameter you wish to change
blinks. Set Gwill cycle through the displays for Manual Power Setting,
F#, and ISO, and Compensation (Section 9.0).
Then, press the Up Jor Down Lbuttons to change the blinking parame-
ter. Note that as you change Power, F# or ISO the shooting distance
changes also.
For model X4d only there is an additional Manual setting for 200/400 watt
seconds, which can be set using the Options button, Section 5.9.
5.5 Changing settings in Auto mode.
The camera exposure may be set to shutter or aperture priority, or
manual when Qflash is set to Auto mode. Light output is controlled
by Qflash.
Press Set Gone or more times until the parameter you wish to change
blinks. Set Gwill cycle through the displays for F#, ISO, and
Compensation (Section 9.0).
Then, press the Up Jor Down Lbuttons to change the blinking parame-
ter. Note that the display shows the minimum to maximum flash distance,
and those distances change when you change F# or ISO. The F# also
may change when the ISO changes in order to keep you in the allowable
ranges of Qflash.

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5.6 TTL mode
TTL mode may be used when the camera exposure is set to manual,
aperture or shutter priority, or program.
In TTL mode the camera will determine flash exposure and there are no
parameters to set. TTL mode requires a Quantum QF series TTL adapter
compatible with the camera. The listing for compatible QF series TTL
adapters is available from your dealer, in the latest Quantum price list, or
at www.qtm.com.
QF series TTL adapters are generally not compatible with digital cameras.
See Section 6 for instructions on using D series QTTL adapters.
5.7 Stroboscopic mode
Pressing the Set Gbutton cycles through Frequency, Number of Flashes,
and Strobo Power, in that order.
5.8 Program mode
The Program mode allows you to store your favorite settings and set-ups
and then quickly recall them just by pressing the Up Jor Down Lbuttons.
Program up to 8 Qflash set-ups of Manual, Auto, or TTL operation, includ-
ing settings for all parameters.

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Your Qflash is factory preset with several Programs (which you can always
change). To view them, press Mode I, then Up Jor Down Luntil you
see the Program mode displayed, like the one above. After the “P” stops
blinking, press the Up Jor Down Lbuttons jump to the next higher, or
lower program number. (Programs numbers which have not been “set” will
be skipped).
How to set up or change a Program
While in the Program mode, press the Set Gbutton. The program
number will blink, and the Up/Down JLbuttons will select the program
number you wish to set or change. All program numbers will be displayed
this way, even those that were “skipped” above.
Press Set Gagain (or press it twice if the Program number stopped blink-
ing). The mode (Manual, Auto, TTL, etc.) will be blinking. Press Up Jor
Down Lto select your flash mode for this program.
Once your flash mode is selected keep pressing Set Gto choose param-
eters to program. To change any settings use the same procedures as the
usual for Manual, Auto, TTL, or Wireless/Wired modes (see Sections 5.4,
5.5, 5.6, and 8.0 )
There are times when you will want to “clear” a Program from memory.
Clearing unwanted programs allows for quicker switching between stored
programs during actual shoots. For example, if you need just 3 Programs for
a job, and you clear out the other 5 Program numbers, you will cycle through
just the 3 Programs you want for a shoot, using the Up/Down JLbuttons.
To clear out a Program
Start in the Program number you wish to clear. Press Set Guntil the
‘mode’ blinks in the display. Press Up Jor Down Luntil the word CLEAR
appears. After several seconds the display will stop blinking and the pro-
gram will be cleared from memory.
Note: You can never clear out Program 1.
5.9 Option ■button
The Option ■button lets you set various features and preferences for
your Qflash.
There are two Option menus. Press the Option ■button once to enter
into Option menu #1. Press Option ■twice to enter into Option menu #2.
Press Option ■again to return to original display.
You may select any option to change by pressing the Set Gbutton until
the option blinks. Then use the Up/Down JLbuttons to make the
change.
Option menu #1

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5.9.1 Flash Sensor Limit for Auto and Auto Fill Modes
Flash sensor limit is an option that limits the distance that the sensor
“sees” when the Qflash is in Auto mode. If the subject has no background
(an open field outside) or the background is far away (a large catering
hall), the sensor tries to balance the light from the subject with the lack of
light coming from the background. The result is an over exposed subject.
By limiting the sensor distance, the sensor will no longer try to balance the
light from a far background, but will set exposure only for the subjects that
are within the sensor limit distance. Sensor limit works for any Auto mode
including Program Auto (Section 5.8).
Setting the Sensor Limit
Press Option ■once and push Set Gonce. The sensor limit will blink.
2. Use Up Jor Down Lbuttons to change the sensor limit. The available
limits are:
∞- no limit placed on sensor distance
20ft / 6m, 15ft / 4m, 10ft / 3m, 5ft / 2m,
When the Flash Sensor Limit is set to ∞Ft, the flash will produce the
desired F/number for a subject within the flash’s minimum and maximum
flash distance.
If, for example, the Flash Sensor Limit is set to 15 Ft, the flash will have a
maximum output of the desired F/number up to the sensor limit in this
case 15 feet).
Quick turn ON / OFF of Sensor Limit
There are times you may want to quickly change from a Sensor Limit dis-
tance, to no sensor limit [∞]. For example, at a wedding reception you may
shoot close up from 5’ with no background, and next shoot a group shot
from 25’.
To set or cancel a sensor limit quickly: Press the Option ■button. Then,
without pressing the Set Gbutton, use the Up Jor Down Lbuttons to
toggle between maximum sensor limit [∞] and the last sensor limit set (in
the procedure above).
You can also use Program to preset the sensor limits you want. Then, just
toggle between them using the Up Jor Down Lbuttons.

5.9.2 Linked Ratio
Linked Ratio sets lighting ratios between any Qflash and a Qflash 4d. The
available ratios are from -3 to +3 stops, in 1/3 stop increments that display
as: -3, -2 7, -2 3, -2, ...etc... +2, +2 3+2 7, +3. See Sections 7 and 8 for more
details.
5.9.3 Resetting the Flash Counter
This option can be used as a way of confirming that the flash has fired for
every picture taken. To zero the counter, push the Set Guntil number of
flashes will blink. Use Up/Down JLbuttons to clear the counter.
Note: The flash counter will also reset when the flash is turned off. The
maximum flash count is 99, then the counter will reset to zero and contin-
ue counting.
Option menu #2
Push Option ■button twice to view
Option menu #2. Turn these options on or off by
Pressing Set Guntil they blink, then Up/Down JL.
5.9.4 Turning the Speaker ON/OFF
You may want the speaker off for sensitive shooting, or turn it on for audi-
ble confirmation of flash exposure. The earphone signals always sound
whether the speaker function is set on or off. For more about the speaker
signals see Sections 5.10.2 to 5.10.6.
5.9.5 Turning the Flash Indicator Lights ON/OFF
The red Flash Indicators on 4 sides of Qflash give visual indication that a
flash fired, whether the exposure was good or not, or that the flash did not
fire. You can enable or disable the lights. For more about Flash Indicators,
refer to Sections 5.10.2 to 5.10.6.
5.9.6 Changing The Reflector settings
Setting reflector type is important so that the displays of distance, guide
number, and f/ number correspond to the reflector in use. The choices are
NORM (for the reflector supplied with Qflash), DIFF (for diffusers supplied
with Qflash, or optional QF67A), BBE (optional Bare Bulb Enhancers
QF62Bs and QF62Bg), and TELE (for optional QF63B). The reflectors
must be repositioned manually.
Notes: When using QF62Bs/g the manual parameters are accurate only
for an open area. In medium and small rooms the very widely dispersed
light will bounce off nearby walls and increase exposure. A practical
solution when using QF62B in small rooms is to meter the light, or else use
Auto Fill, Auto, TTL, or QTTL modes which will provide better exposures
and attractive, soft lighting.
11

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When using a Telephoto Reflector QF63B the Auto mode cannot be used
because the flash sensor is blocked. Use Manual, TTL, QTTL, Strobo or
Linked modes.
Use “B” series reflectors (QF61B, QF62B g/s, QF63B) with Qflash 4d. The
standard QF60 reflector mounts to Qflash 4d as well.
5.9.7 Changing between Feet and Meters
Set your preference for the display of metric (M) or US distance (Ft) units.
Guide numbers also change accordingly.
5.10 Features of Qflash
5.10.1 Flash Ready
One beep will sound
(if the speaker Pis ON)
when Qflash finishes
recycling.
5.10.2 Display, Speaker, and Indicator Lights
Qflash indicates the result of a flash exposure on the Display, via Speaker
(if turned on, Section 5.9.4) or by Flash Indicator Lights (if turned on,
Section 5.9.5). The signals are shown in the table below:
5.10.3 Auto mode exposure indications
There are three types of exposure indications. The display will blink either
OK, Over, or Undr. The display will also indicate how much over or under
the exposure was, from +3 stops to -3 stops. If an arrow appears then the
exposure error is more than 3 stops (for example 3)
Flash exposure condition Display Speaker/Earphone Flash Indicator Lights
Good exposure OK one beep rapid blink
Under/Over Under or Over 3”beeps 3 blinks, pause,
3 blinks, pause...
No flash No Flash long steady beep long steady on

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The Flash Indicators light for several seconds after a flash. See 5.10.2
above for the signals they display.
The Speaker (if turned on, Section 5.9.4) will sound after a flash. The audi-
ble signal is one “beep” for OK and “ready”, and three “beeps” for Under
or Over.
In addition to OK / Under / Over exposure indicators, a ‘Limit’ indicator is
added if the Auto Sensor Limit has been selected (Section 5.9.1). If the
flash output has reached the sensor limit set (5, 10, 15 or 20ft. / 2, 3, 4,
6m) then the word ‘Limit’ will appear in the display, followed by a three
beep and/or 3 blink warning. If the flash output did not reach the sensor
limit then ‘OK’ will be indicated visually and audibly.
5.10.4 TTL mode exposure indications
The exposure indications for TTL or QTTL mode are similar to those of
Auto mode with one exception. The amount of Under or Over exposure will
not be shown in the display.
5.10.5 Strobo mode indicator
After the flash has finished firing a
confirmation message will be dis-
played. The flash will display the
actual number of flashes fired.
Strobo is a manual exposure mode.
Over and Under exposures are not
indicated.
5.10.6 Flash exposure when using several flashes at once
When the flash is in Wired Control (Section 7.0) or Wireless Control
(Section 8.0) the total exposure created by all the flashes, whether OK,
under or over, will be indicated in the Control Qflash display, and by Flash
Indicators and the Speaker (when turned on). Ambient light corresponding
to 1/125 second shutter time is included in the total exposure.
5.10.7 Restoring Factory settings
Qflash options and settings are preset at
the factory. You can restore the factory
settings by the following method:
1. Connect Qflash to Turbo or Qpaq, but turn Turbo or Qpaq OFF first.
2. Press and hold any button (except Test M).
3. Turn Turbo or Qpaq ON.
4. The Qflash will display a reset message.
5. Press Mode Ito reset the Qflash and restore the factory settings.
If any other button or no button is pressed within 4 seconds, the flash will
not restore the factory settings.

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5.10.8 QuickTurn off
If you are using the Qflash as an on-camera flash and want to disable the
flash for a few shots you can use the ‘quick turn off’ feature.
To activate the quick turn off feature press Mode Itwice. The word ‘OFF’
will appear in the display. To return to normal operation press any button
(except Test M).
Note: This feature will only prevent the flash from firing; it will not turn off
the Qflash or the Turbo. To completely turn off the Qflash the Turbo must
be turned off.
5.10.9 Modeling Lamp
The Lamp button activates the modeling lamp. The lamp lights for sev-
eral seconds and shuts off.
Quantum’s QTTL®adapters provide a dedicated link between Qflash 4d
and popular digital and film cameras. QTTL D series adapters can support
the following camera functions, when supported by the camera:
IMPORTANT! With digital cameras perform a custom white balance
prior to a shooting session. Otherwise, the camera will assume you
are using some unknown flash.
6.1 Controls, Displays, and modes
Please refer to sections 5.1, 5.2, and 5.3 to operate the Mode I, Set G
and Up/Down JLbuttons.
Note that with D series adapters the film speed (ISO) and F# are con-
trolled by the camera. To change the F# or ISO adjust your camera.
With some cameras, press the shutter half way periodically to update
the F# and ISO information on the Qflash display.
6.2 Qflash in Manual mode
If Qflash is set to Manual mode using a QTTL adapter flash exposure is
fixed by the settings on Qflash. In Manual mode the following QTTL fea-
tures are available: Rear curtain sync (Section 6.5.1), Auto focus assist
(Section 6.5.2), Shutter speed control (Section 6.5.3), Ready light (Section
6.5.4).
6. Qflash OPERATION WITH QUANTUM
DEDICATED QTTL®ADAPTERS
Flash ready indication
in camera viewfinder
Rear Curtain Sync
TTL ratio / fill flash
Auto Fill ratio
Shutter speed control (camera
detects flash and sets shutter)
TTL flash control-both TTL and pre-flash metering
Auto focus assist
Full dedication

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The camera exposure may be set to manual, or aperture or shutter
priority, however, Qflash will emit the fixed amount of light shown on
its display. Note that only the camera controls the F# and ISO shown on
the display- you cannot change it on Qflash. The distance shown on the
Qflash display will correspond to the correct distance for good exposure
for the F# selected. The camera also selects its shutter speed consistent
with flash exposure.
6.3 Auto Fill mode
The camera exposure may be set to shutter or aperture priority, or
manual when Qflash is set to Auto Fill mode. Light output is con-
trolled by Qflash.
When using a D series QTTL adapter the usual Qflash Auto mode is
replaced by the Auto Fill mode. The F# setting on Qflash tracks the F#
setting on the camera, and the ISO tracks as well.
Auto Fill mode provides fill/flash ratio control even for cameras that do not
support their own TTL fill/flash. Auto Fill is also useful when you prefer
Qflash to control exposure, instead of a camera’s own TTL or pre-flash
metering. Many photographers find that Auto Fill mode provides more
consistent exposures for digital cameras exposures.
In Auto Fill mode aperture and film speed information come from the cam-
era and cannot be changed on Qflash Fill flash ratio may be set using the
“RFill” dial on the QTTL adapter. Choose any setting from -3 stops below
to +2 stops above the camera’s aperture, in 1/3 stop increments. As the
aperture of the camera changes Qflash will adjust it’s output to keep the
ratio that has been selected.

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Error messages will appear if you choose a fill ratio which will is out of
range of the flash. The error indications are:
“OUT OF RANGE - DECREASE FILL OR F#”
For example, the camera is set to F16 and QTTL fill flash is set to +2 stops.
Either decrease F# on the camera or decrease the fill flash ratio on the
QTTL adapter.
“OUT OF RANGE - INCREASE FILL OR F#”
For example, the camera is set to F2.8 and QTTL fill flash is set to -3
stops. Increase the F# on the camera or increase the fill flash ratio on the
QTTL adapter.
Once the adjustments return Qflash within its range, the display will revert
to the usual Auto Fill information.
6.4 QTTL mode
The camera exposure may be set to manual, aperture or shutter pri-
ority, or program, when Qflash is set to QTTL mode.The camera con-
trols the flash exposure.
When using a D series QTTL adapter the usual Qflash TTL mode is
replaced by QTTL mode. QTTL mode has all the features of the Auto Fill
mode described above. The difference is that the camera, not Qflash, con-
trols exposure. All features including adjustment of fill ratio are active. In
addition, the Qflash display shows the type of QTTL adapter in use.
Set your camera to shutter or aperture priority auto exposure, manual or
program mode for QTTL dedication to Qflash 4d.
Some cameras allow compensation ( +/-) for flash/fill ratio. Qflash 4d
flash/fill can also be set on the QTTL adapter using the RFill dial. When
desiring flash/fill ratio use either the camera setting or the QTTL adapter
setting, but not both.
QTTL Fill Dial

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6.5 Additional QTTL features
6.5.1 Rear curtain sync
If supported by your camera, the QTTL adapter can fire Qflash in sync with
the rear curtain. Rear curtain sync is selected by a switch located on the
back of the adapter. Set it to “R” for rear curtain, or “F” for front curtain.
6.5.2 Auto focus assist
If your camera requires an infrared focus assist the QTTL adapter will proj-
ect a beam when the camera focuses. You can turn the auto focus func-
tion on or off by a switch on the adapter.
6.5.3 Shutter speed control
If flash readiness is achieved, the camera’s automatic system switches the
shutter speed to the correct flash sync speed.
6.5.4 Ready light
Flash readiness is established when the indicator appears in the Qflash
display. If “flash ready” is supported by the camera, then an LED or flash
symbol will appear in the viewfinder when Qflash is recycled and ready.
6.5.5 Pre-flash TTL
Cameras that have advanced TTL metering systems require a pre-flash to
determine proper exposure. This pre-flash is supported by the QTTL
adapters.
The Qflash 4d “Wired Control” mode allows a Control Qflash to set
parameters on two Remote Qflashes. This allows Remote Qflashes to be
placed high on a light pole or in a soft box, because it is not necessary to
have access to the back panel of the Remote Qflashes to change their set-
tings.
The Auto and Auto Fill modes add a powerful feature for Multiple Qflash
operation in Wired or Wireless (Section 8) modes. You can set ratios
between flashes using the “Linked” feature. Linking the Remote Qflashes
lets you set lighting ratios between the Control and Remote Qflashes, from
-3 to +3 stops, in 1/3 steps. “Linked” ratios are different from fill/flash ratios:
Linked — sets a ratio between Qflashes (a Control and one or two
Remotes). Remote sensors are turned off. The Control Qflash controls
exposure and the Remote Qflash exposure is “linked” by an exposure
ratio.
7. MULTIPLE Qflash OPERATION - WIRED MODE

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Fill/flash — QTTL D series adapters provide for fixing fill/flash ratios
between the camera’s exposure and the flash’s exposure.
Both fill/flash and Linked ratios can be set independently. Here’s an exam-
ple of using both ratios:
AQTTL adapter is connected to a camera set to f/8. A Control Qflash in
Auto Fill mode is connected to the QTTL adapter. The RFill dial is set to
-2 stops. The light produced by the Control Qflash will be F/4, 2 stops less
than the camera.
ARemote Qflash off to one side is Linked to the Control Qflash at +2
stops. The light produced by this flash will be f/8, 2 stops above the
Control Qflash. In this example the Control Qflash located at the camera
position provides the “fill” light while the Remote Qflash provides the
“main” light.
7.1 Wired Control Mode using only Qflash 4d’s
Qflashes are connected with cables such as QF50 for the Wired Control
mode.
Linked mode is available when the Control Qflash is set to Auto mode.
Even more lighting versatility becomes available when a D series QTTL
adapter is connected to a camera. Then Auto mode is replaced by “AFIL”
(Auto Fill) mode, and in addition to a Linked ratio between Control and
Remote Qflashes, a flash/fill ratio can be set between the camera and the
Control Qflash.
When desiring camera control of exposure using a D series adapter, QTTL
mode replaces TTL mode. The QTTL mode does not provide the Linked
ratio of Auto or Auto Fill modes, however it lets the camera control flash
exposure. The sections that follow explain in detail how to use multiple
Qflashes in Wired Mode.
7.1.1 Setting the Wired mode and the Control flash
The diagram shows a set up for Wired Control. The number of Qflashes
can be 2 or 3. Turn on all Qflashes. The Qflash displays will prompt you to
select the Control flash.