1 - 14
Table 1 shows the corresponding subject distance for the ten zones of focus.
Table 1. ProCam Quintic Lens System Focus Zones
Zone Subject Distance
Feet Meters
1 19.9 - inf. 6.07 - inf.
2 9.92 -19.9 3.02 - 6.07
3 6.55 - 9.92 2.00 - 3.02
4 4.91 - 6.55 1.50 - 2.00
5 3.95 - 4.91 1.20 - 1.50
6 3.28 - 3.95 1.00 - 1.20
7 2.79 - 3.28 0.85 - 1.00
8 2.41 - 2.79 0.73 - 0.85
9 2.12 - 2.41 0.65 - 0.73
10 1.53 - 2.12 0.47 - 0.65
Exposure Control
ProCam uses the same basic exposure system as the Spectra camera. The camera
controls exposure using a combination of visible and infrared light and distance
measurements (Figure 1-13). The ProCam exposure system differs from Spectra
in that it uses an upgraded version of the exposure IC’s. These same upgraded
IC’s are used in the newest “One Board” Spectra cameras which have been
redesigned without the exposure flex. New features present in the upgraded IC’s
are explained in the appropriate sections.
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