Digital Cinematography, 2nd Edition

Lenses 179

seconds undisturbed, and then gently rack focus

to close focus, and then back to furthest focus.

Figure 7.101 Grid chart in skewed position.

If time allows, rotate the chart to a skewed

angle, as large as possible in frame, completely

lling the frame from corner to corner. A second

chart set up alongside the square and level chart

can be useful in order to save time. Focus at the

center of the image, so that the near and far out

of focus areas of the chart are about equally soft.

This chart position is very forgiving, the only pri-

ority is to ll the frame with the chart for every

focal length. Slate and shoot ...