Introduction High speed, short telephoto lenses like this are useful for outdoor portraits, theater and sports under extremely poor lighting conditions. This model from Zeiss features a fast f2.0 initial aperture and an all new, more complex construction using 11 elements than the earlier high-speed designs from the late 80s and early 90s. With anomalous dispersion glass used in the design along with the firm’s Apo designation means it should be better corrected for chromatic aberration than the more common achromatic lenses.This manual focus though aperture coupled model has ‘floating’ elements for improved image quality at
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