{"overview":"The Mamiya RZ67 140mm f\/4.5 Macro is a short telephoto macro lens for the 6x7 medium-format Mamiya RZ67 system, designed primarily for close-up work, product photography, and tight portraits. It uses the bellows focusing of the RZ67 body to reach close working distances without an external extension tube, making it one of the more practical macro options in the RZ kit.","market_narrative":"Reference data for this lens at UK auction is thin: a single hammer result of £110 in April 2024 is the only price point we have on record, so today in 2026 it is fair to treat that figure as an indicative rather than a settled value. Because that price reflects a saleroom hammer (wholesale, before commissions) and not a dealer asking price, clean dealer-listed copies typically sell for noticeably more, and condition, glass clarity and the presence of caps and a working leaf shutter all push the price up or down from this baseline.","buying_guide":"Inspect the front and rear elements under a strong light for fungus, haze and cleaning marks, since RZ glass has often lived in humid studios and storage cases. Open and close the aperture across the full range to confirm the leaf-shutter blades are dry, snappy and free of oil, listen for consistent timing at slow speeds, and check that the focus helicoid turns smoothly without grit or stiffness. Also look for coating scratches on the front element and any sign of element separation around the cemented groups.","specs":"Key specifications on file are limited: a 140mm focal length at f\/4.5 maximum aperture, in the Mamiya RZ67 mount, with macro-range focusing.","faq":[{"q":"What is a Mamiya RZ67 140mm f\/4.5 Macro worth in the UK today?","a":"Based on the single UK auction hammer result we hold, a working copy sold for £110 in April 2024; that is one data point rather than a firm market value, and clean retail copies usually sell for more than the saleroom price."},{"q":"How much does a Mamiya RZ67 140mm f\/4.5 Macro sell for at auction?","a":"Our recorded UK auction price for this lens is £110 hammer, excluding buyer's and seller's commission, so the actual cost to a buyer at the room would be higher once fees are added."},{"q":"Is the 140mm Macro a true 1:1 macro lens?","a":"We do not have verified magnification data on file for this specific lens, so we cannot confirm a 1:1 ratio; the RZ67 body's bellows focusing extends close-focus capability beyond what the lens alone provides."},{"q":"Will an RZ67 140mm Macro fit a Mamiya RB67?","a":"No — Sekor Z lenses are designed for the RZ67 system and are not directly interchangeable with the earlier RB67 mount, which uses non-Z Sekor lenses."}],"confidence":30,"reasoning":"Confidence is low because SPECS and FACTS are empty and SALES HISTORY contains only one auction record, so the price discussion rests on a single data point and most lens-specific detail is omitted rather than invented."}