Iron, yeah that’s just interlacing. Normal. but as I found out from K the XL1 is the bomb. Its nice to have the option of progressive frames instead of interlaced. I'm stuck with interlaced on my Sony. So I always have to deinterlace in post. Not very accurate. When your footage is viewed on a tv it should look fine.

But, and some might disagree with me, Progressive is the way to go. For one a lot of filters you can use don't like interlaced video anyway. Just for instance it can cause a ghosting affect if you blurred a interlaced video. Film is of cores progressive and a lot of time is spend buy some getting there video to look and act more like film.