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VIS-CAM System
40 System Set-Up
Figure 34. Focus Bar marker display.
2. Adjust the lens zoom ring until the plate width just barely fits in between the short vertical zoom
markers on the display.
3. Have your assistant tape the lens front-focus chart to the stand so that it appears in-between the
zoom markers. Make sure the black and white bars are vertical in the image.
4. Carefully adjust the lens focus ring until the focus bar waveform display is maximized in
amplitude spread. The “Focus percentage” display shown on the left side of the “Focus Bar
Waveform” window should then be maximized when the picture has got the best focus. If
necessary, readjust the zoom and focus until the width of the plate is just inside the zoom
markers and the waveform spread of the bars is maximized.