Any one tell me what a DC level on the back is for ????????

[bigjay]

Any one tell me what a DC level on the back is for ????????

I bought a Sony cctv day and night w/66 ir veri-focal lens camera ,I have a problem setting it up ,the picture in the day looks great but by night its gives good night vision also but ,the images around people are have a bright light as if they glow in the dark and you can't make out there faces and look like aliens . its not a cheap camera to buy like some on the market how can I improve this .or do the dc have anything to do with this

also the dvr I bought his running through a scart would I get a better picture though the VGA ..the picture looks ok when viewing through the TV using the scart but its really blocky on full screen mode after you have recorded is this because the dvr is on a 40 inch lcd .how can I improve the picture and make it better .

and there is a usb to record on to a memory stick in gif mode how to you play these on a computer or on the dvr as there is nothing in the instrutions to say how to play them or my computer dont support them .

any help plz

thanks Alan

[iStorm]

ok, where to start, (dc) may mean daylight compensation- dc voltage (Direct Current) if u can send me a picture of the back of the camera i'm sure i will be able to help, Second point (Pictures looking blocky) Your system is recording in fps (frames per second) so your dvr is taking 100 frame picture per second, however that will be split between how many camera's you have on the system, and on some higher end Dvr's you can set the rate to differ between camera's! Your not recording in REAL TIME! Vga is far better than a skart lead, and if u are using a plasma be VERY carefull of burn! Gif images can be converted to avi images, but you should be able to set your dvr to record in avi?? Hope some of this helps.

[bigjay]

I have made a slight improvement with the picture but still got a very bad picture got a job to record images in the dark ,really good picture on TV even better since I changed it from my 40 lcd to a 14 inch standard colour portable tv the viewing picture is much better than the lcd .but the playback is very poor picture quality by night ,I plugged a video recorder in to the image being sent too the tv and it records fine its only when it compressed through the dvr the picture is rubbish this dvr is no use to me and its not fit for what I got it for .

I changed the setting from CIF because the images on playback was even worse you have these pictures in my other emails so show how bad this setting is here is the pictures in cif mode its now in frame on best quality at 25fps its a very slight improvement but still blocky and blurred vision why do they make them with these other settings when they are totally useless and you cant use them ,

can you get you technical to advise you and get back to me

[Jim]

My cheapo ebay cameras do a fair job in both day and night modes but I don't have them recording very fast and my current controller can't do a high fps speed anyway.

You say that ambient or daylight mode seems to work well. I've found that some things vary greatly between infra-red mode and ambient light. My wife's jacket is black but reflects the infra-red very well and it appears white on screen when I'm in night mode.

Maybe your cameras are so sensitive that they pick up actual body heat? That can create a glow as well as make faces look alien-like. Do they resemble images like you see on TV of infra-red imaging? I guess I'm just wondering if they not only detect the infra-red light source reflection but also heat which would overlay the reflected image. One way to tell would be if a car bonnet glows when it's engine is still warm.

[codemonkey]

Originally Posted by bigjay

Any one tell me what a DC level on the back is for ????????

I bought a Sony cctv day and night w/66 ir veri-focal lens camera ,I have a problem setting it up ,the picture in the day looks great but by night its gives good night vision also but ,the images around people are have a bright light as if they glow in the dark and you can't make out there faces and look like aliens . its not a cheap camera to buy like some on the market how can I improve this .or do the dc have anything to do with this

also the dvr I bought his running through a scart would I get a better picture though the VGA ..the picture looks ok when viewing through the TV using the scart but its really blocky on full screen mode after you have recorded is this because the dvr is on a 40 inch lcd .how can I improve the picture and make it better .

and there is a usb to record on to a memory stick in gif mode how to you play these on a computer or on the dvr as there is nothing in the instrutions to say how to play them or my computer dont support them .

any help plz

thanks Alan

The DC level adjusts the automatic iris on DC drive autoiris lenses. So, for example, if you have images that are still too bright, you may adjust it to close the iris a bit more, letting less light enter the camera, or vise versa.

Hope this answers your question.