Hello folks, curious about min. illumination while zooming

Rainvs

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Hello folks,

I was looking for a good cctv forum and just found it :lol:

I ordered some Hikvision products, namely the 7608NI-K2/8P, 7716NI-I4/16P, 2CD2735FWD-IZS, 2CD2635FWD-IZS and 2CD4A25FWD-IZHS with 8 - 32 mm lens and LPR.

Now all those cameras are able to zoom and have pretty low min. illumination. Before ordering those Hikvision cameras, I came across some cameras of Sony with varifocal lens. I noticed that in the specifications of the Sony cameras the f-number is listed like "F1.2 (Wide) to F2.1 (Tele)". When I look at the datasheets of my cameras, I only find one number. Does the f-number of my cameras still increase if I zoom in?

The links beneath are of the datasheets of my cameras.

www.hikvision.com//uploadfile/image/10837_DTCSpecIPCG1PlatformSpecofDS2CD2635FWDIZSV5.4.620170503.pdf

http://www.hikvision.com//uploadfile/image/10839_DTCSpecIPCG1PlatformSpecofDS2CD2735FWDIZSV5.4.620170503.pdf

http://www.hikvision.com//uploadfile/image/310289_D欧分网站维护Spec4LineDS2CD4A25FWDIZ(H)(S).pdf
 
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