That's because it's a wide angle lens, Donny. The Go Pro is an ultra-wide angle lens, which fisheye is more prevalent. Some of this can be corrected with software, but not totally.
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)