You may ask why not just use the gopro de-fish software instead of changing the lens?
Answer: The correction tools in GoPro Studio 2.0 removing the fisheye will twist the edge of the video to even worse. Every time you yaw your helicopter it will make a very hard and narrow point of movement and the edge will be strange. That is the reason most customers replace the original with the 5.4 mm flat lens from Ragecams.
New to the market!!! This deal is for a sweet waterproof gopro hero2 camera with 5.4mm 10mp mega pixel lens, Grab bag of mounts, 2 ragecams batteries, travel charger dock kit 3 part usb, lens cap, waterproof case with required oculus flat lens with cap step ring kit with ND filter included & uv filter protector covers, nd filter insert, & red filter only(the red & nd filter is removable). Also If you want to keep the camera waterproof, thats the only way it will fit in a waterproof case correctly. This camera is modified with semi wide 5.4 mm 10 mp lens & will accept a different variety of lenses never before offered. Finally a non fish eye look at the highest quality to date. This New RageCams exclusive mod also allows you to use other lenses we sell also including the 6mm, 16mm, & 25mm. You can macro focus this lens on objects that are 1 inch from the lens like a microscope if needed, but objects that are farther away will be out of focus. We suggest using a lcd monitor if you constantly want to change your focus. The recommended focus is done by focusing on an object that is 200ft away, then all of the video will look good from 2ft out to infinity.
This lens is available in day or night vision ir sensitive, & also works for the hero1.
Please note that you cannot use the original gopro fish eye lens with this modded camera, or any of the original gopro housings unless you have the oculus flat lens installed.
Please ask before buying if you have any questions.