The number of photos to capture. The value range is [2, 255]. If 255 is selected, then the camera will continue to take pictures until stopShootPhotoWithCompletion is called. For thermal imaging camera and Z30 camera, it can only be set to 255.
The time interval between when two photos are taken. The range for this parameter depends the photo file format(DJICameraPhotoFileFormat). For XT camera, the range is [1, 60] seconds. For all other products, when the file format is JPEG, the range is [2, 2^16 - 1] seconds; when the file format is RAW or RAW+JPEG, the range is [10, 2^16 - 1] seconds.