some strange things I noticed on bright red areas... at DVinfo.net

Nicola Smanio · April 11th, 2003, 06:24 AM

I've noticed a strange thing while I was editing my last video. It was not visible when I was shooting, but seeing back the footage on the computer screen I've noticed that very bright red areas (like cars red light, for instance) have a bit fuzzy borders. of course the thing was still visible on TV, but maybe a bit less, because attenuated by the interlacing.
I have an XL1s and I was shooting in frame mode. Could it be because of the pixel shift? but that should be on the green channel, shouldn't it?

I mean, it's not a major problem, but I would like to know if anybody else noticed that before...

greets

Robert Aldrich · April 11th, 2003, 10:03 AM

Try turning down the color level on your TV monitor.

Nori Wentworth · April 11th, 2003, 10:09 AM

This is a problem with all video. The only solution is not to shoot things that are red.

-Nori

Nathan Gifford · April 11th, 2003, 11:07 AM

Yes you need to use a calibrated monitor if you really want to judge reds. Also if you use the RCA video connectors instead of the S-Video, you will really exacerbate this problem further.

Jon Eriksson · April 14th, 2003, 03:59 AM

What you're experiencing is colour bleeding - i.e. the colour is too saturated for use on video. You can sort this out by taking down the saturation in post (depending on NLE, you could either do it on the red only, or you might have to take the saturation down on the entire image).

There is a wide range of tools to measure legal colours for video - both hardware and software based - any of these are probably a better option than looking at what you can see on your monitor since it might not even be correctly calibrated.

One colour that often causes this problem is, as in this case, red... And if you intend to make copies of it, it will become worse, so I would fix it before getting it out.

Hope this helps.

April 11th, 2003, 06:24 AM	#1
Nicola Smanio Tourist Join Date: Jan 2003 Location: Milano, Italy Posts: 4	some strange things I noticed on bright red areas... I've noticed a strange thing while I was editing my last video. It was not visible when I was shooting, but seeing back the footage on the computer screen I've noticed that very bright red areas (like cars red light, for instance) have a bit fuzzy borders. of course the thing was still visible on TV, but maybe a bit less, because attenuated by the interlacing. I have an XL1s and I was shooting in frame mode. Could it be because of the pixel shift? but that should be on the green channel, shouldn't it? I mean, it's not a major problem, but I would like to know if anybody else noticed that before... greets __________________ Nicola

April 11th, 2003, 11:07 AM	#4
Nathan Gifford Wrangler Join Date: Sep 2001 Location: Tickfaw, LA Posts: 1,217	Yes you need to use a calibrated monitor if you really want to judge reds. Also if you use the RCA video connectors instead of the S-Video, you will really exacerbate this problem further. __________________ Nathan Gifford Southern Cyclist Magazine & Productions For quick answers try our Search! To see me and Rob Lohman click here

April 14th, 2003, 03:59 AM	#5
Jon Eriksson Regular Crew Join Date: Aug 2002 Location: London, UK Posts: 42	What you're experiencing is colour bleeding - i.e. the colour is too saturated for use on video. You can sort this out by taking down the saturation in post (depending on NLE, you could either do it on the red only, or you might have to take the saturation down on the entire image). There is a wide range of tools to measure legal colours for video - both hardware and software based - any of these are probably a better option than looking at what you can see on your monitor since it might not even be correctly calibrated. One colour that often causes this problem is, as in this case, red... And if you intend to make copies of it, it will become worse, so I would fix it before getting it out. Hope this helps. __________________ Real Men do not Preview

April 11th, 2003, 10:03 AM	#2
Robert Aldrich Regular Crew Join Date: Feb 2003 Location: Hollywood, CA Posts: 39	Try turning down the color level on your TV monitor.

April 11th, 2003, 10:09 AM	#3
Nori Wentworth Wrangler Join Date: Dec 2001 Location: Kelowna, B.C. Canada Posts: 217	This is a problem with all video. The only solution is not to shoot things that are red. -Nori