Geoff Baxter wrote:MisterKofa, what are the penalties or drawbacks to using Twixtor?
The issues when not used correctly are artifacts, unwanted morphing or warping on parts of the image. If you take a close look at the example I provided, in the first shot, you can see his right hand's movement (your left) is not as smooth as the rest of his body. This is because he's moving fast and the shot is not in focus. The second example is perfect because the subject is moving slowly and is in focus, allowing twixtor to create the in-between frames accurately.
Spending some time with it and shooting test footage is the best way to fully understand how it works.
A few things to keep in mind:
1. Use a tripod or stabilizer
2. Have your subject move slooooowly. If they have to run, try to have them run as slow as possible but take long strides.
3. Shoot at the highest frame rate possible. Of course 60 works better than 30, but we we gotta work with what we have...and it still works. And even when I shot at 60fps I still got artifacts.
4. Some report using a faster shutter to reduce motion blur which also helps, but I've been able to achieve these results shooting at 180 degrees.
Good luck and I hope this helps a few of us that really like the benefits of slow motion.