VIVOTEK
User's Manual - 55
Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no.
2.12 2.3 2.26 2.5 2.40 2.5 2.54 2.6 2.68 2.6 2.82 2.6 2.96 2.7 3.36 2.8
2.13 2.4 2.27 2.5 2.41 2.5 2.55 2.6 2.69 2.6 2.83 2.6 2.97 2.7 3.40 2.8
2.14 2.4 2.28 2.5 2.42 2.5 2.56 2.6 2.70 2.6 2.84 2.6 2.98 2.7 3.44 2.8
2.15 2.4 2.29 2.5 2.43 2.5 2.57 2.6 2.71 2.6 2.85 2.7 2.99 2.7 3.49 2.8
2.16 2.4 2.30 2.5 2.44 2.5 2.58 2.6 2.72 2.6 2.86 2.7 3.00 2.7 3.53 2.8
2.17 2.3 2.31 2.5 2.45 2.5 2.59 2.6 2.73 2.6 2.87 2.7 3.01 2.7 3.58 2.8
2.18 2.4 2.32 2.5 2.46 2.5 2.60 2.6 2.74 2.6 2.88 2.7 3.05 2.7 3.62 2.8
2.19 2.4 2.33 2.5 2.47 2.5 2.61 2.6 2.75 2.6 2.89 2.7 3.09 2.7 3.67 2.8
2.20 2.3 2.34 2.5 2.48 2.5 2.62 2.6 2.76 2.6 2.90 2.7 3.12 2.7 3.72 2.9
2.21 2.4 2.35 2.5 2.49 2.5 2.63 2.6 2.77 2.6 2.91 2.7 3.16 2.7 3.76 2.9
2.22 2.4 2.36 2.5 2.50 2.6 2.64 2.6 2.78 2.6 2.92 2.7 3.20 2.7 3.81 2.9
2.23 2.5 2.37 2.5 2.51 2.6 2.65 2.6 2.79 2.6 2.93 2.7 3.24 2.8 3.86 2.9
2.24 2.5 2.38 2.5 2.52 2.6 2.66 2.6 2.80 2.6 2.94 2.7 3.28 2.8 3.92 2.9
2.25 2.5 2.39 2.5 2.53 2.6 2.67 2.6 2.81 2.6 2.95 2.7 3.32 2.8 3.97 2.9
Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no.
4.02 2.9 4.89 3.1 6.05 3.2 7.59 3.3 9.64 3.5 12.28 3.5 15.66 3.4 20.76 3.4
4.08 2.9 4.96 3.1 6.14 3.2 7.72 3.4 9.80 3.5 12.49 3.5 15.94 3.4 21.29 3.4
4.13 2.9 5.04 3.1 6.24 3.2 7.85 3.4 9.98 3.5 12.71 3.5 16.23 3.4 21.85 3.4
4.19 2.9 5.11 3.1 6.34 3.2 7.98 3.4 10.15 3.5 12.93 3.5 16.53 3.4 22.47 3.4
4.25 3.0 5.19 3.1 6.44 3.2 8.12 3.4 10.33 3.5 13.15 3.5 16.84 3.4 23.15 3.4
4.30 3.0 5.26 3.1 6.55 3.3 8.26 3.4 10.51 3.5 13.38 3.5 17.16 3.4 23.89 3.4
4.36 3.0 5.34 3.1 6.65 3.3 8.40 3.4 10.69 3.5 13.61 3.5 17.49 3.4 24.72 3.5
4.43 3.0 5.43 3.1 6.76 3.3 8.54 3.4 10.88 3.5 13.85 3.5 17.83 3.4 25.66 3.5
4.49 3.0 5.51 3.1 6.87 3.3 8.69 3.4 11.07 3.5 14.09 3.5 18.19 3.4 26.74 3.6
4.55 3.0 5.59 3.1 6.99 3.3 8.84 3.4 11.26 3.5 14.34 3.5 18.56 3.4 28.00 3.7
4.62 3.0 5.68 3.2 7.10 3.3 8.99 3.4 11.46 3.5 14.59 3.5 18.96 3.4
4.68 3.0 5.77 3.2 7.22 3.3 9.15 3.4 11.66 3.5 14.85 3.5 19.37 3.4
4.75 3.0 5.86 3.2 7.34 3.3 9.31 3.4 11.86 3.5 15.11 3.5 19.80 3.4
4.82 3.0 5.59 3.2 7.46 3.3 9.47 3.5 12.07 3.5 15.38 3.4 20.27 3.5
• When Iris Priority is selected for the Exposure mode, the tunable aperture size is related to zoom
ratio. When using different zoom ratios, the range of aperture sizes can be different. When zoom ratio is
0x, the range of iris sizes is F1.6~F14. When zoom ratio is 20x, the iris size is F3.4. See below for the
corresponding maximum iris sizes at different zoom ratios:
NOTE:
Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no. Zoom
ratio
F no.
1.00 1.4 1.14 1.6 1.28 1.8 1.42 1.9 1.56 2.1 1.70 2.2 1.84 2.2 1.98 2.3
1.01 1.4 1.15 1.6 1.29 1.8 1.43 1.9 1.57 2.1 1.71 2.2 1.85 2.3 1.99 2.3
1.02 1.4 1.16 1.6 1.30 1.8 1.44 2.0 1.58 2.1 1.72 2.2 1.86 2.3 2.00 2.3
1.03 1.4 1.17 1.6 1.31 1.8 1.45 2.0 1.59 2.1 1.73 2.2 1.87 2.3 2.01 2.3
1.04 1.5 1.18 1.7 1.32 1.8 1.46 2.0 1.60 2.1 1.74 2.2 1.88 2.3 2.02 2.3
1.05 1.5 1.19 1.7 1.33 1.8 1.47 2.0 1.61 2.1 1.75 2.2 1.89 2.3 2.03 2.4
1.06 1.5 1.20 1.7 1.34 1.9 1.48 2.0 1.62 2.1 1.76 2.2 1.90 2.3 2.04 2.4
1.07 1.5 1.21 1.7 1.35 1.9 1.49 2.0 1.63 2.1 1.77 2.2 1.91 2.2 2.05 2.4
1.08 1.5 1.22 1.7 1.36 1.9 1.50 2.0 1.64 2.1 1.78 2.2 1.92 2.3 2.06 2.4
1.09 1.5 1.23 1.7 1.37 1.9 1.51 2.0 1.65 2.1 1.79 2.2 1.93 2.3 2.07 2.4
1.10 1.5 1.24 1.7 1.38 1.9 1.52 2.0 1.66 2.1 1.80 2.2 1.94 2.3 2.08 2.4
1.11 1.6 1.25 1.8 1.39 1.9 1.53 2.0 1.67 2.1 1.81 2.2 1.95 2.3 2.09 2.4
1.12 1.6 1.26 1.8 1.40 1.9 1.54 2.0 1.68 2.1 1.82 2.2 1.96 2.3 2.10 2.4
1.13 1.6 1.27 1.8 1.41 1.9 1.55 2.1 1.69 2.2 1.83 2.2 1.97 2.3 2.11 2.4