550d 1080 verses 720 and aliasing etc..

eric geurts lakin

Active member
If I film the same scene in 1080 @ 25p and then in 720 @ 50p, I find that the 720 video footage has the usual aliasing/moire etc, and that the picture has an "interlaced" look about it, but in the 1080 footage the aliasing/moire is much less, and even non-existent at times with no "interlaced" look about it.

Is this normal with the 550d? Am I doing something wrong here? ...... is it best to simply keep away from the 720 option and just stick to using 1080?

I would really like to use the 720 for slow-mo, but the video is just too awful , even for "home-movies" which is all that I dare use this camera for at the moment.
 
If I film the same scene in 1080 @ 25p and then in 720 @ 50p, I find that the 720 video footage has the usual aliasing/moire etc, and that the picture has an "interlaced" look about it, but in the 1080 footage the aliasing/moire is much less, and even non-existent at times with no "interlaced" look about it.

Is this normal with the 550d? Am I doing something wrong here? ...... is it best to simply keep away from the 720 option and just stick to using 1080?

I would really like to use the 720 for slow-mo, but the video is just too awful , even for "home-movies" which is all that I dare use this camera for at the moment.

Learn your tools and their work arounds. Many professional movies in theaters are using these camera with the proper lenses , rigs and lighting. 720p causes a lot of problems on wide shots, but up close and focused at different angles you can get some nice shots. Also look into the new color profiles released which also help against these problems.
 
Learn your tools and their work arounds. Many professional movies in theaters are using these camera with the proper lenses , rigs and lighting. 720p causes a lot of problems on wide shots, but up close and focused at different angles you can get some nice shots. Also look into the new color profiles released which also help against these problems.

I've just tried filming in 720p without using a wide shot on my 18-55mm lens and the quality was greatly improved, and it seemed to be even better with a 1.8 50mm lens.
I'll look into the new colour profiles like you mentioned. Thank you.
 
Defocusing a bit will help a lot (usually front focus). If you do it right, it won't reduce sharpness (maybe apparent sharpness, but that's another story).

Stopping down (f22 or even more) also works.
 
I've now downoaded the "Technicolor Profile" which improves things no end, especially with the low detail setting, and I shall try the "Marvels Cine Picture Style" next, which will no doubt be excellent too.
 
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