T2i Weird compression?

P

pinnaclepoint

Member
Why are the lines in this image that I took with my T2i so jagged looking..? Look on the Television. It's really bugging me!

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It's part of the line skipping that the T2i does. Light from the lens is projected onto a HUGE sensor, much larger than the near 2k resolution you get in your final image. To accomplish this, the camera records one line tosses out three (I think that's the number, but you get the point), records a line, tosses out three, and so on. This produces the jagged lines and the morie pattern that you're seeing on the TV.
 
That is not compression but moire from the OLPF being designed for 17MP instead of 1080p. There is little you can do about it other than avoid being focused on high frequency detail like the speaker's tiny holes. If it were slightly out of focus it would go away. An other thing you can do is buy softening filters that can work, but it is hit or miss depending on the focal lenth, frequency of detail in the surfaces you are shooting, and how sharp the lens you are using is. This is a problem we must deal with if we want to use cameras designed for stills as video cameras. But we can't complain if we are paying $500 and getting such images.
 
^ What he said.

Or you could shoot on a ProSumer video camera (with or without an adaptor), or a Pro video camera (with or without an adaptor), or you could shoot on film, or you could shoot on RED... or you could shoot on a consumer video camera.
 
Having just completed my first professional project with a t2i, any spots like that that really stood out, I ended up doing some post beauty work and compositing, so keep that option in mind as well, though of course it's a bit time-consuming, but it can save your shot.
 
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