{"overview":"The Mamiya RZ67 75mm f\/4.5 Shift is a wide-angle perspective-control lens for the RZ67 medium-format SLR system, designed to correct converging verticals in architectural and product work. It uses the bayonet mount shared by the RZ67 series and was intended for studio and commercial photographers who needed shift movements without resorting to a view camera.","market_narrative":"At UK auction the 75mm f\/4.5 Shift is thinly traded, with the two recorded hammer results sitting at £130 and £175 — wholesale saleroom prices that exclude buyer's and seller's commission. On that small sample the median price is around £153, and as of today in 2026 a clean, fully working copy would be expected to sell for somewhere in that band, with rougher examples worth less and boxed sets potentially carrying a premium.","buying_guide":"Inspect the front and rear elements for fungus, haze and cleaning marks, and check the aperture blades for oil — a common issue on older Sekor Z barrels. Work the shift mechanism through its full travel to confirm it moves smoothly without binding and locks securely, and turn the focus helicoid to check it is neither stiff nor sticky. Look for coating scratches, edge separation and any play in the mount, since the shift function puts extra stress on the bayonet.","specs":"A 75mm f\/4.5 wide-angle shift lens for the Mamiya RZ67 system, mounting via the standard RZ67 bayonet.","faq":[{"q":"What is a Mamiya RZ67 75mm f\/4.5 Shift worth at UK auction?","a":"Recent UK hammer prices have ranged from £130 to £175, giving an approximate median value of around £153 for a usable copy."},{"q":"How much does a Mamiya RZ67 75mm f\/4.5 Shift sell for today?","a":"Based on the limited 2023–2024 auction record, current saleroom prices sit in the £130–£175 band, before buyer's and seller's commission."},{"q":"What should I check before buying one?","a":"Confirm the shift mechanism moves smoothly and locks, check for fungus, haze and oil on the aperture blades, and make sure the focus helicoid is not stiff."},{"q":"Does it fit the RB67?","a":"No — this is a Sekor Z lens for the RZ67 system and is not interchangeable with RB67 bodies, which use a different mount and shutter coupling."}],"confidence":40,"reasoning":"Only two sales records are available and no detailed specs or variants were provided, so pricing guidance and technical detail are necessarily limited."}