7d footage problem.

[Limitedoffer]

Took some footage yesterday and I kept on having dark Lines across my footage. I have no idea what this is. I changed lens and White Balence and ISO Shutter. Nothing!

Anyone have an idea what this could be?

 

[Matt Gottshalk]

Fluorescent lights will do that.

 

[Limitedoffer]

Fluorescent lights will do that.

We used a Mix of lights. IN the beginning I did not have this problem. Then later on in the shoot I saw it.

 

[Jordan Scott Price]

That is one of the trademark problems with HDSLRS.

What shutter speed are you using? I've found using 1/60 instead of 1/50 is best under fluorescents.

 

[Limitedoffer]

See this is it. It did not matter what Shutter.ISO or Lens or lights I was using. These lines were there the whole time. Even if I went to a different location or anything. In the beginning I did not have this problem. Then all of a sudden it showed up. Could this be internal maybe?

 

[Jordan Scott Price]

Oh, sorry, I didn't see "Shutter" there in your first post.

 

[J Davis]

there is a flicker that you can't see in the lights you are using at 50Hz because they are drawing off U.S. household power. This is matching your shutter speed at s1/50 and creating those lines.

Alter the shutter to s1/60 or use flureo/hmi's that have a flicker free ballast or switch to tungsten