CCTV Zoom Lenses
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A CCTV zoom lens is a lens that can change its field of view, narrowing to a distant point or widening to an overview, while fitted to a CCTV camera. This page discusses a changing view for CCTV cameras as a buyer requirement. Availability from Hangzhou Ai Ke Electronics Co., Ltd. is not established. Ask whether a suitable lens is available before ordering.
Zoom matters where the camera must do two jobs: watch an area in general, and then look closely at something in it. A fixed lens forces a choice between those jobs at installation; a zoom lens lets the operator, or the installer, move between them. Whether that movement is by hand, by motor or by the camera system itself must be confirmed for the exact lens concerned.
What a CCTV zoom lens does
In its wide setting, a zoom lens gives an overview of an area, like a wide-angle lens. In its narrow setting, it concentrates on a point, like a telephoto view. The ability to move between those settings is the point of the category, and it is what distinguishes this page from the fixed-view pages on this site.
The varifocal category page explains the adjustable idea in general, and the guide to CCTV cameras with zoom lenses explains the selection questions. This page is the application entry point: it describes the CCTV job that zoom serves, rather than the mechanism behind it.
Where CCTV zoom lenses are used
CCTV zoom lenses are used where a camera must watch an area and also examine points within it: a yard where a gate must sometimes be examined, a hall where a doorway must sometimes be watched closely, a car park where a vehicle must sometimes be picked out, or a boundary where a distant section must sometimes be checked.
They are also used where the installer cannot fix the view in advance, because the right view only becomes clear once the camera is up and the picture is seen. In those cases the zoom lets the view be set after installation, without refitting the lens.
What to confirm before ordering
Confirm how the zoom is operated for the exact lens concerned, whether by hand, by motor or through the camera system, and confirm that the zoom behaviour suits the buyer's CCTV camera and job. Confirm the model, specifications, minimum order quantity, lead time and price for the quantity required, and confirm compatibility.
Documents should be confirmed at the same time. Certificates available upon request. No certificate detail is stated on this site.
Frequently asked questions
Is zoom the same as varifocal?
The two overlap. On this site, varifocal names the adjustable category and zoom names the application of changing the view. Ask the company which term applies to the exact lens offered.
Can a zoom lens replace several fixed cameras?
It can cover both overview and detail jobs from one position, but it cannot watch two points at once. Plan by what each camera must show, and when.
How is the zoom operated?
That depends on the exact lens. Confirm the operating method for the lens offered before ordering.
Related pages
Questions to confirm before ordering
Model numbers, specifications, minimum order quantities, lead times and prices are not published on this site. Before payment, confirm each item below in writing for the exact lens and quantity you need.
- Confirm the exact lens category and the camera or system it will be used with.
- Confirm the model number that applies, if one is offered for your requirement.
- Confirm the specifications that matter for your application, in writing, before ordering.
- Confirm the minimum order quantity, the lead time and the price for your quantity.
- Confirm which documents are supplied with the order. Certificates available upon request.
- Confirm compatibility with your camera and mounting arrangement before ordering.
Send your inquiry to [email protected] (Contact: Melody Zheng, 0086-571-86619019, 0086-13819196867, [email protected]).