What is the best interval to delay shooting clouds and traffic? I use Panasonic HDC-HS20 camera with camera function.

How long the interval depends on the subject matter, usually ranging from every three seconds to dozens of seconds.

How to shoot a time-lapse movie;

If the playback speed of a movie is 24 frames per second (24 fps), we need 24 hard photos to make a one-second movie. The time interval between photos will affect the acceleration rate of content. If you take a photo every second, the characters in the film will run 24 times faster. Therefore, even if we condense a day into one minute, it is not a problem. Some tools are necessary.

tripod

If you shoot with a camcorder, because you can shoot 24 or more photos per second, even if there is no shock, only the image will shake.

If we take time-lapse photography with a camera, we will compress the time, usually only press the shutter once from half a second to dozens of seconds. In the case of holding hands, absolutely no one can aim at the same position. Without the help of a tripod, the synthesized image will not only shake, but also jump up and down. Moreover, time-lapse photography often takes a few minutes, and holding the camera for an hour is enough to make people break their arms.

Therefore, the tripod is a necessity for shooting time-lapse photography. Don't move the tripod at the beginning of shooting until the whole group of photos are taken.

Automatic shutter controller (spacer):

Shooting time-lapse photography is a long-term job. If the shutter is manually controlled, if you press it every ten seconds for two hours, the angle of the photo will be inconsistent.

When shooting at night, exposure of 20 seconds and 30 seconds is very common.