Flying a drone to capture video brings a whole new perspective and a new tool for cinematography. Rolling shutter is nothing new to the world of cinematography, but understanding what causes rolling shutter and how to prevent rolling shutter will add that extra touch of quality to your cinematography video.
Global Shutter vs Rolling Shutter
First we need to visit on the difference between what a rolling shutter is and a global shutter. Most of our DSLR cameras on drones today use rolling shutter, but if you want to work with a global shutter camera, you will need to invest in a heavy lifter rig that can carry a high end camera like the ARRI Alexa.
The difference between the two types of shutters mostly show up in motion. Global shutter is a process where the sensor will turn on all the pixels to capture the image at the same time, and then after the set shutter speed time is up, the sensor will then turn off all of the pixels at the same time to then transfer all of the pixel's data at once in parallel off of the sensor. With Rolling Shutter, the sensor will start from say the top left pixel, and scan across each row to turn each pixel on to capture the image, and then after the specific shutter speed time, the sensor will then scan from say the top left pixel again and scan across each row to turn each pixel off and to transfer each pixel's data off of the sensor in series.