Manual Iris

A manual iris on a security camera is an iris that must be manually adjusted. It is recommended to only use a manual iris lens in a situation where the lighting conditions are consistent and optimal at all times. If lighting is not optimal it will create less than acceptable video images. This limits the situations where a manual iris can be used. If lighting will be changing at all it is recommended to use an auto iris lens.

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For more information on lenses and use in security camera systems please seeAperture, Depth of Field, Field of View, andF-stop.

Also see Fixed Iris and Auto Iris.

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