marathon wrote in post #2107457
like the camera has to be set in Manual mode so exposure is consistent.
Yup, it helps, otherwise you will get very annoying flicker as each frame re-adjusts itself.
marathon wrote in post #2107457How long should intervals be between shots? 10 seconds? 30 seconds? 1 minute?
All depends on what you want to time lapse. Corn growing is going to take a much longer interval than cars driving down the street.
The math is simple frame rate * time = number of frames. For video quality its 30 fps, movies are played back at 24, old 8mm home movies is generally 18, and once you get below 15/16 frames it no longer looks like a movie, but a jerky series of photos.
marathon wrote in post #2107457I plan on doing this downtown near a busy street just to see how time flies in an urban setting.
Actually a busy down town you want a fairly fast frame rate otherwise things just turn into a jumble. Think of it this way. One individual covers about 5-7 feet a second walking and a car maybe 10-30. If your frame rate is once every 10 seconds each individual will move 50 feet per frame. If you don’t care about individuals but are interested in shadows on buildings a shadow moved about a quarter of a degree every minute. If you want to get from sun up to sun down say 12 hours. If you want to make your video last a minute at movie quality its 1440 frames or one frame every 2 minutes.
Two other points, remember that this is video and anything more than 640x480 is wasted so shooting on the smallest setting is fine. Secondly, if you do not have the software to trigger the camera, might want to do a Google on 555 timers. There are some very simple astable circuits one can build for just a couple of bucks.
