Rear conversion lens system

摘要

A rear conversion lens system to be used for varying the focal length being inserted to the space between an objective for a single-lens reflex camera and film surface, the rear conversion lens system comprising a first lens component arranged as a positive lens, a second lens component arranged as a negative lens, a third lens component arranged as a positive meniscus lens, a fourth lens component arranged as a biconcave lens, and a fifth lens component arranged as a positive cemented doublet, the rear conversion lens system being arranged that the magnification is higher than 1.6 and aberrations are corrected favorably.