About time-lapse photography! ! I can't count myself, please help! !

This problem can be calculated as follows:

Normal video is 24 frames per second ... The higher the number of frames, the smoother the picture. ...

You need 15 seconds of video, and the total number of shots is 24x15 ......................................................................................................................................

So, the rest is easy to calculate. ...

If you want to shoot at several times the speed, just adjust the number of shots. ...