Canon telephoto conversion lens supplier
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canon telephoto conversion lens
telephoto conversion lens
telephoto lens is a specific construction of a long focal length photographic lens in which the physical length of the lens is shorter than the focal length. In these lenses the optical center lies outside of its physical construction, such that the entire lens assembly is between the optical center and the focal plane. A regular lens of a focal length that is longer than what is considered a normal lens is not necessarily a telephoto lens. A telephoto lens has to incorporate a special lens group known as a telephoto group (see below) ; nevertheless, non-telephoto lenses of long focal length are often informally referred to as telephoto lenses.
Specification of our telephoto lens as follow: *25mm,27mm,28mm, 30mm,30.5mm,34mm,37mm,43mm, 46mm,49mm,52mm, 55mm,58mm,62mm, 72mm 2.0X telephoto lens;
*37mm 2.5X and 3.0X telephoto lens;
*52mm 3.0X telephoto lens;