Zonet ZVC7640, Руководство пользователя

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6.2 System Control
6.2.1 Calculator
Click Calculator button to set the storage and optics parameters.
Storage Calculator: Users can input any 3 of the 4 variables. And the
checked field will be calculated using the parameters provided.
Optics Calculator: The user can provide 2 of the 3 variables; lens focal
length, object distance, and horizontal coverage. The checked field will be
calculated using the provided variables.
Sensor size: Please refer to the spec sheet
Horizontal resolution: You can input lens focal length and object
distance to let the system calculate the coverage, or vice versa.
Resolving Power: Resolving power is a measurement of how many
details can be seen in real world. The more the resolving power is, the
much easier to identify the object. It can be used as a reference to
determine if something can be identified or read. For example, about
100 lpm(horizontally) minimal is required to read car license plates.
However, the value is just for reference as there're other factors
affecting image quality as well. For example, weather, shutter speed,
and focusing.