telescopic isnt a fish eye lense first off, telescopic would give you a narrower view but look as if you were closer, what you are prob looking for is a wide angle lens, a wide angle is about .5x and will give you a wider view, a fish eye is a specific type of wide angle typicly .3x and smaller, and is refered to as such because of the distortion typical with this type of lens, now you have to decide if you like the fish eye look, it is not too popular with skiing, more so with skating, or a wide angle, also factor in, what size lens you need, 38mm, 52mm, 58mm??? and how much you wana spend lenses go anywhere from 50 for a cheap plastic lens to 1000+ for a death lens by centry optics,
*JaSoN*