what's the maximum resolution I can get from composite BNC connection? at DVinfo.net

Juan Dela Cruz · September 24th, 2007, 04:32 PM

What's the maximum resolution I can get using composite BNC input of a 800 lines monitor? video source: pd170 camera.

Glenn Chan · September 24th, 2007, 05:24 PM

Some monitors have a comb filter which you can enable/disable... it will tradeoff resolution versus cross-color artifacts.

2- Resolution depends on how you measure it. There are many different methods.

3- What are you trying to do?

Giroud Francois · September 25th, 2007, 01:45 AM

if the signal is good , there is no difference between DV an composite

Juan Dela Cruz · September 25th, 2007, 06:49 PM

can I get 600 lines from BNC connection?

Glenn Chan · September 25th, 2007, 10:09 PM

Juan, what are you trying to do?

2- You could also take S-video coming off your camera.

Eric Lagerlof · September 25th, 2007, 11:58 PM

Juan, resolution from a monitor is not just a counting of lines. Various elements go into what you 'see' as a 'clearer', more finally detailed picture. In general, if your signal is coming from a single analog bnc cable, (bypassing sdi signals for the moment), it will be a standard resolution picture. Period.

The reason why people are mentioning combing filters and S-VHS cables is because a single cable carries a "composite" video signal, the color & luminance information is carried in the same signal. Some colors, especially reds, will get fuzzy at the edges, saturated colors will introduce chroma crawl, etc. Combing filters and S cables, which seperate luminance and chrominance, help deal with issues like those, and the result is a picture with greater detail, even though the actual 'resolution' hasn't changed.

Other issues, such as the dot pitch of the monitor, the distance between the viewer and the screen, etc., also effect the perceived detail.

So after all that, your lone bnc cable is supplying a 640x480 or 720x480 (What is standard resolution these days anyway?) resolution, standard def.

September 24th, 2007, 04:32 PM	#1
Juan Dela Cruz Regular Crew Join Date: Dec 2005 Posts: 83	what's the maximum resolution I can get from composite BNC connection? What's the maximum resolution I can get using composite BNC input of a 800 lines monitor? video source: pd170 camera.

September 24th, 2007, 05:24 PM	#2
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	Some monitors have a comb filter which you can enable/disable... it will tradeoff resolution versus cross-color artifacts. 2- Resolution depends on how you measure it. There are many different methods. 3- What are you trying to do?

September 25th, 2007, 01:45 AM	#3
Giroud Francois Inner Circle Join Date: Feb 2004 Location: switzerland Posts: 2,133	if the signal is good , there is no difference between DV an composite

September 25th, 2007, 06:49 PM	#4
Juan Dela Cruz Regular Crew Join Date: Dec 2005 Posts: 83	can I get 600 lines from BNC connection?

September 25th, 2007, 10:09 PM	#5
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	Juan, what are you trying to do? 2- You could also take S-video coming off your camera.

September 25th, 2007, 11:58 PM	#6
Eric Lagerlof Major Player Join Date: Mar 2004 Location: Pacifica, CA Posts: 348	Juan, resolution from a monitor is not just a counting of lines. Various elements go into what you 'see' as a 'clearer', more finally detailed picture. In general, if your signal is coming from a single analog bnc cable, (bypassing sdi signals for the moment), it will be a standard resolution picture. Period. The reason why people are mentioning combing filters and S-VHS cables is because a single cable carries a "composite" video signal, the color & luminance information is carried in the same signal. Some colors, especially reds, will get fuzzy at the edges, saturated colors will introduce chroma crawl, etc. Combing filters and S cables, which seperate luminance and chrominance, help deal with issues like those, and the result is a picture with greater detail, even though the actual 'resolution' hasn't changed. Other issues, such as the dot pitch of the monitor, the distance between the viewer and the screen, etc., also effect the perceived detail. So after all that, your lone bnc cable is supplying a 640x480 or 720x480 (What is standard resolution these days anyway?) resolution, standard def.