QUOTE(Pegasus88 @ Aug 18 2017, 11:47 AM)
Hi,
Which technology is the most common offer by cctv installer nowadays ?
Is it common to use IP CCTV camera here ? Like using RJ45 connect camera to a NVR, hosting the video file by ourself.
Few year ago when Coax system still analog (max 1000TVL, resolution max 720x480), if you want HD, 720P system, u need to use IP. But now the trend is TVI, CVI, AHD.. Still Use Coax. For example, TVI and CVI now can support Camera 5megapixel. AHD support Camera 1.3MP (720p) or 2MP (1080P).
This let user who still using old system can direct upgrade to higher resolution system, use higher megapixel camera.
When demand high and higher, price will become lower and lower.
So the trend now is High Resolution over Coax.
Quality and Price: TVI > CVI > AHD
IP is most expensive if u compare TVI, CVI, AHD system with same resolution.
For small scale, go to Coax System.
For large scale, go for IP system.