Originally posted by Rnovo Here is the final result which I prefer - at 6fps - as opposed to the standard TV 25 fps which I find too "jerky". The work covers a total period of time of 4hr50min rendered in 2min35sec. I started at 1 min interval after giving in to local "pressure" and soon found out it was too much and changed it to 30 sec...The final exposure is all manual (including AF) f5.6; 1/6; ISO80; WB fluo N. The result is 892 images taken at the lowest K5 resolution of 2M and one star quality which gives 1728X1152px at 300ppi 237KB/image; the whole file at that resolution is 245.40MB. The result is great for viewing on a regular monitor and I love this "dropbox" public folder for sharing a 225MB .mov file with people.
The 25fps quickTime movie is only 35sec but, in the end, I find this a great experience and the managers love it so I'm happy!
One last thing, the painting of the new floor will be done shortly and I will post the end result.
https://dl.dropbox.com/u/89281898/Day%201%20new%20floor%206%20fps.mov Interesting - I never thought to change the output frame rate to be anything other than 24 or 30 fps, but then I've never tried doing something like a floor installation, or quickly moving subjects. Learn something new every day!
One other thing I've discovered making time lapse sequences, is that you want to run your lens all the way open or 1 stop down (use an ND filter if needed). Or use a lens with an aperture ring. This eliminates a source of "flicker" in the resulting movie. I saw a bit in your movie, but much of that was probably due to the outside light changing.
The reason is that the mechanical aperture closing has a very slight variation from shot to shot. Think of a 1 mm error (or whatever) on the aperture lever. If the lens is wide open or 1 stop down, this 1mm error won't change the lens opening very much. However, if the lens is being stopped down to something like f/8, that same 1mm error has a much larger effect. And this shows up as flicker in the resulting movie. I've looked at the actual pixels in the flicker, and it's amazing to see that even a very small variation, on the order of 1%, is very noticeable in the resulting movie.
With an aperture ring, the camera just drives the aperture until it hits a mechanical stop in the lens. You still get a bit of flicker, but it's less than if you use the lens in "A" mode.
You can verify this behavior as well. On a tripod, shoot two pictures in a row, wide open. Then shoot two more stopped way down. If you go into your favorite image program, you'll find that wide open, the images will be (or should be) almost exactly the same. Stopped way down, you probably will see a slight variation. And this shows up as flicker in the resulting movie. It's also almost impossible to fix in post processing.