aim120

The low light capability of large sensor cameras with low MegaPixels = bigger pixels.

Both the models are there on the chinese hikvision site.

DS-2CD2732F-I is a manual focus/zoom so it cannot be done via software. Only models that have a Z letter in them have powered zoom and can be controlled via software. Like http://www.hikvision.com/en/Products_show.asp?id=6892 or http://www.hikvision.com/en/Products_show.asp?id=9428

As to which wide angle degrees ,it depends on the sensor size and the distance to the target.The Hikvision 3mp cameras like the DS-2CD3332 they use 1/3 inch sensor. Use this http://www.wrekincom.com/cctv_cam_calculator.html

I thought alibaba is for large quantities. How many did you buy and whats the shipped price.

The 2332 is a PoE camera whereas the 3332 does not support PoE and requires an external PSU. Nope ,the DS-2CD2332-I and DS-2CD3332-I has POE . The DS-2CD2332D-I and DS-2CD3332D-I lacks POE.

The chinese website lists both the DS-2CD2332 and DS-2CD3332 anyone know the difference,the IR emitter looks different one is silver and other is black. http://translate.googleusercontent.com/translate_c?depth=1&hl=en&prev=/search%3Fq%3Dhttp://www.hikvision.com/cn/products.asp%253Fcid%253D40294%2523Menu%253DChildMenu3%26safe%3Doff&rurl=translate.google.com&sl=zh-CN&u=http://www.hikvision.com/cn/Products_show.asp%3Fid%3D7316&usg=ALkJrhgY5h_zHAgLBZUKHjzo4ioGqEN_3Q http://translate.googleusercontent.com/translate_c?depth=1&hl=en&prev=/search%3Fq%3Dhttp://www.hikvision.com/cn/products.asp%253Fcid%253D40294%2523Menu%253DChildMenu3%26safe%3Doff&rurl=translate.google.com&sl=zh-CN&u=http://www.hikvision.com/cn/Products_show.asp%3Fid%3D7313&usg=ALkJrhhbnQlz8f1_q6S32fhhGPk2O33AVQ