A GoPro is simply too small to accurately hit the half/half position for clear split shots. But, the PolarPro Fifty Fifty’s curved dome solves this problem, acting as a plastic lens that pushes the water away from the lens, creating a larger field of view (FOV). Thus, the bigger the dome, the further in front of it the image will form.
Experiment with angles
Getting the hang of shooting great over/under shots takes practice. Experiment with different angles and levels in a pool or bathtub. You basically have three options to frame your shot:
The Traditional: Hold the dome perpendicular to the water surface for a 50/ 50 split.
The Fish Bowl: To capture scenes with great underwater landscapes, hold the dome angled down for a 75 under / 30 over split.
The Submarine: To keep your eyes focused on the camera’s LCD screen, go underwater and hold the dome angle upwards for a 30 under / 75 over split.