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Blue fringing

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ken Pugh
Blue fringing
on May 17, 2005 at 11:20:53 pm


I've recently been using a Sony DSR570 (DVCAM) and have been getting a lot of blue fringing where bright and dark areas collide (eg around leaves against a white sky). Does anyone have any experience with how to minimise this? Am I overexposing?

Thanks,

Ken.


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Dave LaRonde
Re: Blue fringing
on May 18, 2005 at 6:59:04 pm

1) Well, NTSC is notorious for treating high-contrast edges badly. That's part of the problem.

2) Are you overexposing? Look at your scope and see what it says, but you don't necessarily have to be overexposed to get nasty edges.

3) Do you have any kind of image enhancement active when you shoot? It can make high-contrast areas look worse.

4) Remember that you're shooting on DV, and the DV codec rarely treats an image as nicely as it ought to be.

One thing you can do right away is to reduce contrast with lighting, if it's at all possible. Reflectors can be a godsend outdoors. You have to take more people on a shoot, but reflectors do help.


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Jake Abramson
Re: Blue fringing
on May 19, 2005 at 7:22:33 pm

Welcome to the world of shooting on DVCAM. The only way to reduce it is to minimize contrasting colors.


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Ken Pugh
Re: Blue fringing
on May 20, 2005 at 1:08:22 pm


Thanks for the tips - I'll try them.

Best,

Ken.


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