D90 for chromakey?

Zack Birlew

Zack Birlew

Veteran
Hey guys, I've been reading all the great posts about the D90 and I'm fairly impressed with the video quality, regardless of the jello vision issue since I like to stay on a tripod. However, nobody has, as far as I know, posted anything about using the D90 for chromakey situations. If I wanted to buy this camera for filmmaking purposes, I'd at least like to know whether it can at least do this. The 720p resolution shouldn't be a problem, it's the MJPEG compression that has me worried. Any thoughts?
 
I wouldn't recommend trying to pull a key with d90 footage.

Strangely enough, I dl'd the sample footage of the 5DII from DPreview, and the shot of a bird against a blue sky keyed almost perfectly with no fuss.
 
the bird had such a large sharpening halo around that it was already masked for you :D

i don'y know about d90. it could do well. i see no reason why not.
 
That's pretty great Rolly - curious as to how you set that shot up if you wouldn't mind giving away your secrets? Verrrrry convincing.
 
Well, that's a nice exercise from Andrew Kraemers tutorials, works well.
But i wouldn't count on any camcorder with compression to perform good enough in any given chromakey task. I had the chance to work with RAWish footage in a bluebox and thought to myself, man these files are huge, why not aply some compression...hey motion JPEG seems nice, small and looks goo...oh wait. Now i have to soften the edges of the matte extensively and they still jitter like hell...
Well, looking at the compressed footage at 200% I saw the problem, compression artifacts, exactly like JPEG images, but very noisy. A colleague of mine had the same problem with the edges as he tried to chromakey from a HDV cam...
Fast and short action shots, ok! But everything more demanding cries for some way of capturing uncompressed footage.
I too am thinking of getting the D90, but I am very happy to have a professional greenbox at my uni...
 
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