These Hikvision cameras features PoE for easy connection and configuration, via Hikvision NVRs and also 120dB Wide Dynamic range as well as 3D Noise reduction. Video Compression Main stream: H.265+/H.265/H.264+/H.264; Sub-stream: H.265/H.264/MJPEG; Third stream: H.265/H.264 Line crossing detection, Intrusion detection, Unattended baggage detection, Object removal detection

Audio Bit Rate -U: 64 Kbps (G.711ulaw/G.711alaw)/16 Kbps (G.722.1)/16 Kbps (G.726)/32 to 192 Kbps (MP2L2)/8 to 320 Kbps (MP3)/16 to 64 Kbps (AAC-LC) If you want the static white light on event, then yes you need to get the models ending LU (2347/2387) but as stated above they're not an old model. They are current. Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) – clearly “zoomed out” Fix the problem that neither IR nor white light will turn on when the ambient brightness suddenly becomes dim in an event-triggered situation in smart mode. ColorVu Technology works to provide full colour images 24/7. The camera is able to achieve this with a large iris, high-performance sensor and built-in white LED supplement lighting. The second model you linked is a G1 camera. That is an older discontinued model (it has ColorVu but does not have AcuSense). I would advise against that. Smart Event Line crossing detection, intrusion detection, region entrance detection, region exiting detection

You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till) TCP/IP, UDP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, DDNS, RTP, RTSP, RTCP, PPPoE, NTP, UPnP, SMTP, SNMP, IGMP, 802.1X, QoS, IPv6 Narrows down the angle and zooms in to look past the immediate area a little to gain more detail – down a driveway for example from higher up Smart Event Line crossing detection, intrusion detection, object removal detection, unattended baggage detection, Face Detection Is it safe to assume that my mistake was to upgrade to the latest firmware rather than the firmware that specifically allows motion detection activation for supplemental light?I've personally only ever used 4 or 8 (there's no specific reason for that decision). 8 MP are a good choice if you're covering a larger area or are using the ultra wide 2.8mm lens; if not 4 MP are fine. Look at the data sheets and they give you some DORI (Detect, Observe, Recognise, Identify) distances that may be of use. If the cameras are connected to a Hikvision NVR you'll need to be mindful of how much bandwidth you have available on that NVR.

A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom"Basic Event Motion detection (human and vehicle targets classification), video tampering alarm, exception Protocols TCP/IP, ICMP, HTTP, HTTPS, FTP, DHCP, DNS, DDNS, RTP, RTSP, NTP, UPnP, SMTP, IGMP, 802.1X, QoS, IPv4, IPv6, UDP, Bonjour, SSL/TLS, PPPoE, SNMP