Post Processing - Panasonic AG-HMX100 Manual

3d production and post

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The avoidance of unwanted artifacts during production is best achieved on location by

evaluating shots with a 3D monitor and by screening 3D dailies on a screen that matches

the size of the display on which the film will be seen in its target market. As further

insurance, simple computer programs permit filmmakers to determine acceptable

interocular settings by entering values for parallax, focal length, imager size, subject

distance, audience interocular, and the width of the target screen.

Post Processing

If decisions regarding convergence are deferred until post, the images from the left and

right eyes may be converged by the process called depth grading or horizontal image

translation (HIT). This technique (see Fig.7), involves horizontally displacing the right

and left images to produce negative, zero, or positive parallax values on the screen plane.

Because of the potential need to enlarge and to crop the image during this process,

filmmakers who are shooting with their lenses parallel (unconverged) generally choose to

shoot in overscan mode, leaving a buffer zone around the sides of their frame.

Fig.7 – Depth Grading

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