Before using FrameSync features, the light has to be calibrated to the camera shutter.
There is a special mode used for calibrating the light to an external sync source, such as the Flashbandit sync box. It is used to make sure the camera shutter and Creamsource are synchronised, to prevent the flash-banding effects when shooting on a CMOS sensor camera.
Calibration needs to be done before using any of the FrameSync features.
If the framerate or shutter angle on the camera is changed, the calibration will need to be re-done. You do NOT need to recalibrate if the sync cable is removed or the units are powered down, providing the framerate and shutter angle have not changed.
Follow these steps to Calibrate your setup:
1. Connect sync source to the camera and Vortex
Depending on your setup, you may be using a Creamsource Flashbandit accessory, or directly connecting the camera to the Vortex. For more into on connection setup, see here.
Once sync is established, a green bar will be highlighted on the top of the status bar of the Vortex display indicating the device is synchronised. The frame rate will also be displayed beneath the status bar.
2. Point your camera directly at the Vortex so the entire frame is covered by the LEDs
You want to make sure the light from the LEDs fills the entire frame of the monitor. It does not need to be in focus, and does not matter if there is a soft-box, dome or other accessory fitted.
3. Select 'Effects > Calibrate Sync' on the fixture
The fixture will start to flash at the locked frame rate (see Calibrate Sync Effect Mode for more details on these settings). ￼
If using multiple fixtures with sync distributed by DMX cable, only the first unit needs to be calibrated. If camera frame rate and/or shutter angle is changed, it is recommended to re-calibrate.
4. Adjust phase value on Calibrate Sync screen
As you change the phase, a dark band should appear to move up and down on the camera monitor. Adjust until the dark band fills the monitor completely. Shooting with wide shutter angles and at higher speeds reduces the size of the dark band, making calibration more difficult.
5. The Vortex8 is now calibrated
It can now be set to desired effect mode (Normal, Strobe etc) E.g. Select Effects > Flash Frames.