The 200mm f3.0 is also a very high performance fast lens, with close focusing capabilities. The result of this patented design is that image sharpness is consistent throughout the format from center to edge, and at all focusing distances. Light transmission through the center is relatively unaffected by focusing changes and corner performance is retained throughout the focusing range by the compensating element. These aberrations are most pronounced in the corners of the format. In designing a 200mm lens that would provide equally excellent images from infinity to a moderate close-up distance, Vivitar specialists introduced a stationary rear compensating lens to correct aberrations produced as the lens moves in relation to the film plane. In the past this problem was simply avoided by using special purpose lenses for close-up photography, while standard lenses continued to be optimized at infinity. Lens aberrations increase significantly as the lens is focused down to its closest focusing position, these aberrations being especially pronounced toward the edges of the format. Traditionally, a lens of this type has been designed to produce optimal results when photographing objects which are at a relatively far distance from the camera. The typical better-quality 200mm lens has a maximum aperture of f3.5 or f4, and a minimum focusing distance of around 1.8 meters.
#Vivitar series 1 manual lens manual series
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*) Sources of data: Manufacturer's technical data Vivitar Series 1 200mm 1:3 AUTO TELEPHOTO VMC