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Limited by the data-rate of the 550d, I would like to figure out the lowest frame rate needed for twixtoring of complex movement such as waves and trees in the wind,  giving natural looking results.

In this video@18 fps->30fps, wave movement looks natural to me, with some minor tearing of the sail (no pun intended) against the skyline, which I can probably fix as I learn how to use Twixtor better.

I made another video containing wave movement earlier at 6 fps that I twixtored to 24 fps, but the result was pretty bad, with very unnatural looking movement of the waves.

So does anyone have experience twixtoring water movement? What is the minimum required frame rate and what settings should be used?

As an option for photographing lightning in a thunder storm, it would be nice to have the option of letting ML continuously fill buffer with Silent Pictures and save its content upon motion detect trigger.

Hey guys. I'm a new owner of a 550d(with the kit lens: IS II) and feel I should get some quality lenses. I'm looking to buy a 50 mm f/1.4 or 1.8 and possibly a 18-135ish mm lens. I'll be shooting portraits, landscapes, city-scapes with quite a bit of HDR as well as some video/HDR-vid.

Any suggestions for a tight budget, is there any good non-canon lenses for me? I'm also looking at ebay.