The Asahi Pentax Super-Multi-Coated Takumar 100mm f/4 Macro is a short-telephoto macro prime in the M42 screw mount, dating from Pentax's Super-Multi-Coated Takumar era of the early 1970s. Designed for close-up and copy work as well as portraiture, it is a manual-focus lens valued today by users of vintage SLRs and adapted mirrorless bodies who want to know what a clean copy is worth on the secondhand market.

Sales data for this lens is extremely thin: a single UK auction hammer result from March 2026 shows a copy selling for £20, which sets the only verifiable price point we currently have in 2026. Because that figure is a wholesale saleroom result rather than a retail asking price, dealer-listed examples typically sell for noticeably more, and condition, glass clarity and the presence of the original case or hood will all influence what a given copy is worth. With only one data point on file we cannot yet quote a meaningful range or median, so treat the £20 figure as indicative rather than a firm guide to value.