What is the difference between 2.8 mm, 4 mm, 6 mm and 8 mm lens?
VIGI C400HP , VIGI C340HPWSM , VIGI C440-W , VIGI C540HPWSM , VIGI C540HWSM-W4 , VIGI C340S , VIGI C540V , VIGI C540S , VIGI C250 , VIGI C540-W , VIGI C230 , VIGI C450 , VIGI C350 , VIGI C300P , VIGI C430 , VIGI C330 , VIGI C355 , VIGI C330I , VIGI C320I , VIGI C455 , VIGI C440HWSM-W4 , VIGI C340I , VIGI C580-4G , VIGI C420I , VIGI C230I Mini , VIGI C340HWSM-W4 , VIGI C580-W , VIGI C300HP , VIGI C340 , VIGI C340 (VIGI C340HPWSM) , VIGI C540-4G , VIGI C240 , VIGI C340-W , VIGI C540 , VIGI C485 , VIGI C400P , VIGI C440 , VIGI C385 , VIGI C420 , VIGI C440I , VIGI C445 , VIGI C430I , VIGI C220I , VIGI C230I , VIGI C240I
Recent updates may have expanded access to feature(s) discussed in this FAQ. Visit your product's support page, select the correct hardware version for your device and check either the Datasheet or the firmware section for the latest improvements added to your product.
Lens focal length tells us the angle of view—how much of the scene will be captured—and the magnification—how large individual elements will be. The lager the focal length, the narrower the angle of view and the higher the magnification.
VIGI indoor cameras have a focal length of 2.8/4 mm and VIGI outdoor cameras have a focal length of 4/6 mm. The last digit of the model indicates the focal length of the lens.
For example:
VIGI C400HP-4: The focal length is 4 mm.
VIGI C300HP-6: The focal length is 6 mm.
How to select suitable lens?
The larger the focal length of the lens, the smaller the angle of view, and the farther the monitoring distance. So the camera lens with low focal length is suitable for observing small areas where need a wide angle. If you want to observe the objects closer with a big distance, you’d better select the cameras with a lager focal length lens.
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