I commonly have this same problem. I think at this stage, we are using very high resolution things and our pro-sumer software just isn't keeping up with us. If the image you are using does not need to be the resolution that it's at you could try reducing that. I remember asking a similar Question and Mr. Laronde suggested to stay away from cameras and use the 2D world.
And I said...No. I just had to live with a couple choppy shots. Only nerds like us will care anyways.
Oh and our bosses...doh.
You could also try curving motion paths or speeding/slowing camera moves, slightly changing the focal point. There's some other settings kind of stuff I found a while ago, something with color space. I don't remember.
This is totally unhelpful, but I'm here for moral support.
Thanks for the moral support. There's some comfort in knowing others are suffering too :)
I did some more research and found that besides the high-rez of images causing the jitter, another possible cause is having two layers too close together in 3D space... though that wasn't my particular problem. Maybe someone reading this might benefit though.
In the end, I did a bunch of tests with different blurs and was able to reduce the flicker - not totally - but to a level I can live with. Then I read Tudor's reply which confirmed the solution. Fast Blur works good.
Hopefully, this will help someone else with a similar problem.
Does Creative Cow have a 'knowledge bank' kind of thing? Like a list of solutions to common problems. I know you can search posts but it seems the same problems come up for a lot of people. Would be good to go to a page, look up "Jittering/Flickering" and get definitive solutions.
Can't complain with the help I've gotten from this site though. It's an awesome community.
Most likely you encounter the jitter with fine detail because some of the artwork detail is close to a pixel or under. It's not the software but the resolution you're working at. The fix is usually applying a fast blur of anywhere from .3 to .7.