A fisheye lens has a shorter focal distance than a normal lens. From any given spot an image is made with a fisheye lens, it includes more field of view than with a normal lens. 0.2x HD Ultra Wide Angle Fisheye Lens for Canon VIXIA HF W11 W10 HF20 HF11 HG21 HG20 HG11 HR10 for Sony HDR-CX455 HDR-HC9 HDR-HC7 Camcorder.
