The EagleEye 20x from Torrey Pines Logic is a telephoto conversion lens that makes it possible to record video from a distance with your GoPro camera. At 20x magnification, the lens converts the ultra-wide angle of view of the GoPro lens to a narrow 4.7°, allowing you to capture subjects at distances up to 3280' feet away. Integrated into the rear of the lens is a frame for mounting a naked, unmodified GoPro HERO2, HERO3, HERO3+, or HERO4, aligning the camera precisely with the optics. Two sets of mounting clamps are included; one that accommodates a GoPro with an attached LCD BacPac, and one that is compatible with a GoPro without an attached BacPac. The lens ships with a 1/4"-20 tripod adapter, and comes with optional mounts available for attaching to Picatinny rail systems, making it a great choice for capturing hunting activities.