Canon XF305 Біла книга - Сторінка 16

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Manually Set White Balance

Use a white card, chart or 18% gray card to set the

manual white balance of both cameras. On

beamsplitter rigs it is not advisable to use preset

white balance settings because the mirror glass

introduces its own tint to the image on each camera.

Set the WB switch to either A or B and press and hold

the AWB button to execute the white balance

sequence.

Using lens axis shift built-in function

Before you mount the cameras in a beamsplitter rig rst open the CAMERA SETUP-OIS FUNCTIONS

submenu, select AXIS SHIFT and then RESET. Now mount the cameras into the rig, set the interaxial

distance to zero, set the zoom lenses to the same focal length, and adjust the controls on your rig to

align the images of the two cameras. It is best to use a left right signal muxer to see the camera

images superimposed or use a professional stereoscopic monitor that can accept left and right HD-

SDI inputs.

If you have aligned your rig as closely as you can get it you can take it one step further within the

camera and utilize the LENS AXIS

SHIFT to tune out vertical disparity

or converge on any point. Just open

the CAMERA SETUP-OIS FUNCTIONS

submenu, select AXIS SHIFT and

then select ADJUST. You will see

four yellow triangles and will be able

to move the optical axis up/down or

side to side to achieve ner

alignment. When you are happy

with position press SET.

Although the lens axis shift function is available in the cameras, the author recommends that it not

be used if stereoscopic post-production software will be available for use to ne tune the alignment.

XF300/305 Whitepaper

Tim Dashwood

Stereoscopic 3D