Dahua IPCHDBW3300N, Быстрый старт

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2.3 Lens Adjustment
Step 1
Slightly loose the screw B manually and then turn the screw B slowly. Adjust the lens focus
distance to the proper position according to the monitor video. See Figure 2-7.
Step 2
Use the flat screwdriver to loose the screw A slightly and then turn the Screw A slowly. Adjust the
lens focus to get the clear video and then use the flat screwdriver to secure the screw firmly.
Step 3
When you are adjusting the screw A, the video may becomes blur. Please slightly adjust the
screw B manually to get the vivid video. Finally fix the screw.
Figure 2-7