Quantum Qflash X4d Instrucciones de operaciones descargar pdf (Pagina 19)

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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Quantum Qflash X4d Instrucciones de operaciones Pagina 19