Post by davy on Sept 16, 2014 20:51:40 GMT
HI FOLKS.
have been in talks with a chap from a cctv retailer on ebay,and had asked questions on suitability on cameras for astronomy use ,basically the Sammy scb2000 specs.. and I said in one of my messages about the jump being made to hd sdi cameras, this is what I got back.
Hi,
If I am to be totally honest the HD-SDI stuff is a bit of a flash in the pan.
For CCTV the transmission range on a coaxial cable is around 50M before you begin to loose signal, so for CCTV use this proved near impossible to use.
Add to this the many different data formats that were employed on HD-SDI, (about 8 different ONVIF formats alone, add to this all the other formats such as Samsung, Pelco, Panasonic, JVC, SONY and so on) made this a dead duck from day 1, we did have a range of our own for a while and stocked Samsung HD-SDI for a while, but these were not big sellers, and for CCTV we had a few issues also, the picture quality was 2.1MP at 30 IPS however so by no means bad!
We still have some of the Samsung SCD-6080 cameras in stock, (but no compatible recorders however any more, you will need an SRD-480 HD-SDI or SRD-880 for these cameras) and we still have limited production of our own 2.1MP cameras and recorders, (also HD-SDI) and these use a Sony Exview 1/2" CMOS Chip and have a nice picture, as well as a few recorders for these also.
Add to the mix the new BEYOND Samsung kit, HD-CVI and AHD-HD stuff from China that is flooding the market, HD-SDI has limited days left before the end as all of these can give a 1.3MP quality picture over 300M distance.
IP will be the logical next step however, and all CCTV will eventually go this way, the bandwidth is so much higher so the pictures can be that much better.
Kind Regards,
name and company withheld by me ...davy
have been in talks with a chap from a cctv retailer on ebay,and had asked questions on suitability on cameras for astronomy use ,basically the Sammy scb2000 specs.. and I said in one of my messages about the jump being made to hd sdi cameras, this is what I got back.
Hi,
If I am to be totally honest the HD-SDI stuff is a bit of a flash in the pan.
For CCTV the transmission range on a coaxial cable is around 50M before you begin to loose signal, so for CCTV use this proved near impossible to use.
Add to this the many different data formats that were employed on HD-SDI, (about 8 different ONVIF formats alone, add to this all the other formats such as Samsung, Pelco, Panasonic, JVC, SONY and so on) made this a dead duck from day 1, we did have a range of our own for a while and stocked Samsung HD-SDI for a while, but these were not big sellers, and for CCTV we had a few issues also, the picture quality was 2.1MP at 30 IPS however so by no means bad!
We still have some of the Samsung SCD-6080 cameras in stock, (but no compatible recorders however any more, you will need an SRD-480 HD-SDI or SRD-880 for these cameras) and we still have limited production of our own 2.1MP cameras and recorders, (also HD-SDI) and these use a Sony Exview 1/2" CMOS Chip and have a nice picture, as well as a few recorders for these also.
Add to the mix the new BEYOND Samsung kit, HD-CVI and AHD-HD stuff from China that is flooding the market, HD-SDI has limited days left before the end as all of these can give a 1.3MP quality picture over 300M distance.
IP will be the logical next step however, and all CCTV will eventually go this way, the bandwidth is so much higher so the pictures can be that much better.
Kind Regards,
name and company withheld by me ...davy