How many exposures do you need for a 360˚ Panoramic Photo?
Portrait Aspect Ratio
The best choices for shooting panoramic photos is a portrait orientation. If you have the option to shoot in portrait mode, do so. You’ll be able to minimize distortion by creating sizable overlap and will get a higher resolution end image. If shooting a full 360˚ panoramic image, turn the camera in 15˚ increments. This means you will need to take 24 pictures for a complete loop.
Landscape Aspect Ratio
If a Landscape orientation is your only option, then you won’t need as many exposures due to the wider images. You can try shooting with 20˚ increments (18 pictures) or 30˚ increments (12 pictures).