I've been looking at looking at getting a super-telephoto lens for my camera (Canon T2i), mostly for astro-photography and/or taking photos of animals from a distance. I found this one made by Rokinon for only $240, a 650-1300mm zoom lens. Considering that the Canon brand equivalent would cost somewhere in the price range of several nice cars, that's a great price. I'm just wondering if anyone can vouch for the quality of either this lens specifically, or Rokinon lenses in general. It may be a good price comparatively, but it's still quite a bit of money to spend without considerable research.