Frightening Moire on a D800

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plnelson

Member
Last summer I was shooting a street scene that was partly in shadow and partly in sunlight to evaluate the dynamic range of my D800. The lens was a Nikkor 24-70 f/2.8. A woman walked into the scene wearing a long grey dress with narrow stripes. In the video she enters from the right wearing a gray baseball cap. Keep an eye on her as she walks through the scene - at about the :21 second mark it becomes frightening. N.B., for best results this should be watched at HD resolution - click the little gear at the bottom of the YouTube player and select either 720 or 1080.
https://www.youtube.com/watch?v=TQoyxRFVlf4&feature=youtu.be

PS - is there any way, when I post a video to Youtube, to force it to only play in HD, so I don't have to keep telling people to set it that way? The default setting on YouTube videos seems to be very low.
 
It has always been like that. Unless you buy these http://store.mosaicengineering.com/, which may solve the problem a little bit. Of course, there are some things that can be done in post too. That woman looked like she was from a different dimension of some sort lol.
 
IMO, there's no moire until she hits the direct sunlight. At that point you're right it gets pretty scarey looking. The worst is when she is walking somewhat diagonally through the frame and settles down when near the end she is walking straight up the frame. I am not sure you can fix that. IMO it's probably inherent in the camera.

Good luck with it !!!
 
freaky indeed
but at least it's perfectly black-and-white (magenta-green rainbows will call your eye a lot more)

still: it seems to have more aliasing problems than I've seen on D800 footage... what settings did you use? (particularly: sharpening and contrast)
 
There's other elements that alias badly in that shot besides the black & white dress. Check out the truck's grill, or the woman, s colorful skirt on the left-ish side.
 
Yes, everything is aliasing more than I usually see in D800 footage. That's why I was asking about the settings.

The dress is absolutely freaky though. Worth posting, for sure.
 
Samuel H said:
Yes, everything is aliasing more than I usually see in D800 footage. That's why I was asking about the settings.

The dress is absolutely freaky though. Worth posting, for sure.
Click to expand...

Unfortunately I don't remember what the settings were. I took it last August while on Cape Cod because I wanted to see if I shoot a scene partially in direct sunlight and partially in shade, something cameras with tiny sensors like my XA20 struggle with.

But I'm new to video - my background is in still photography. Do video files have anything like Exif data that I can unpack to see camera settings, etc?
 
plnelson said:
Unfortunately I don't remember what the settings were. I took it last August while on Cape Cod because I wanted to see if I shoot a scene partially in direct sunlight and partially in shade, something cameras with tiny sensors like my XA20 struggle with.

But I'm new to video - my background is in still photography. Do video files have anything like Exif data that I can unpack to see camera settings, etc?
Click to expand...

The Quicktime MOV file format does have the ability to store 'metadata'. I don't think Nikon takes any advantage of that for 'mov' movie use.
 
If depth of field is not an issue and there's plenty of light one easy way to soften things a bit and knock down aliasing is to stop the lens to say F18 or even F20. And one very cool aspect about the D800 is that it remembers your f-stop between stills and video. So if you're shooting stills at F8 but switch to video mode, if you were at F18 it will still be there.
 
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