{"overview":"The Schneider-Kreuznach 240mm f\/9 G-Claron is a large-format process lens, originally designed for graphic arts reproduction and copy work at high magnifications. Its compact barrel and modest f\/9 maximum aperture made it popular among large-format photographers seeking a lightweight long-focal-length option, typically mounted in a shutter for field use on 5x4, 5x7 and 8x10 cameras.","market_narrative":"UK auction activity for the 240mm f\/9 G-Claron is thin, with the most recent hammer result we have on file from November 2025 selling for £60 at saleroom level — a wholesale figure that excludes buyer's and seller's commission. With only a single data point in our records as of 2026, that price should be treated as indicative rather than a firm market value, and clean examples mounted in a working Copal or Compur shutter typically sell for considerably more than a bare barrel-mount copy.","buying_guide":"Inspect the glass carefully for fungus, internal haze and cleaning marks, all of which are common on process lenses that have spent decades in print shops. Check the aperture blades for oil migration and confirm the iris moves smoothly across its full range; if the lens is in shutter, fire it at every speed to listen for sticky slow speeds, and look for any signs of separation at the cemented groups or scratches to the coating.","specs":"Listed as a 240mm focal length with a maximum aperture of f\/9; no further specifications were provided in the source data.","faq":[{"q":"What is a Schneider 240mm f\/9 G-Claron worth at UK auction?","a":"Based on the limited data available, one example sold for £60 hammer in November 2025; with only one recorded sale, this should be read as a single data point rather than a reliable market value."},{"q":"How much does a 240mm G-Claron sell for in shutter versus barrel?","a":"Our sales history does not specify whether the £60 sale was a barrel or shuttered example, but in general a G-Claron mounted in a working Copal shutter commands a meaningful premium over a bare barrel copy because it can be used directly on a field camera."},{"q":"Is the 240mm G-Claron suitable for 8x10 use?","a":"G-Claron lenses were designed as process optics for high-magnification copy work, and many large-format photographers use the 240mm on 8x10 at infinity, though coverage and corner performance depend on the specific aperture and subject distance."},{"q":"What should I check before buying a used G-Claron?","a":"Check for fungus, haze, oil on the aperture blades, coating scratches and any signs of element separation, and if the lens is in shutter, test every speed to confirm the slow speeds are not sticking."}],"confidence":30,"reasoning":"Only a single sales record and no SPECS or variant data were provided, so the price commentary rests on one data point and the technical description is limited to widely-known categorisation."}

{"overview":"The Schneider-Kreuznach 355mm f\/9 G-Claron is a large format process lens from the German optical maker, originally designed for high-resolution flat-field reproduction work such as copying and graphic arts. Its modest f\/9 maximum aperture, long focal length and generous coverage also made it a popular choice among 8x10 and ultra-large-format field photographers who repurposed process lenses for landscape use. It is typically supplied in a barrel or Copal shutter and covers well beyond 8x10 at working apertures.","market_narrative":"At recent UK auction, hammer prices for the 355mm f\/9 G-Claron have ranged from £130 to £375, giving a midpoint around £250 based on the limited sample available in 2026. Clean, shuttered examples tend to sell for more than barrel-only copies, which helps explain the spread between these two saleroom results. Because the data set is small, individual condition and whether the lens is mounted in a working Copal shutter have an outsized effect on what a given copy is worth.","buying_guide":"Inspect the glass carefully for fungus, haze and cleaning marks, as process lenses have often spent decades in studio or darkroom environments. Check the aperture blades for oil and sluggish movement, and if the lens is in a Copal shutter confirm that all speeds fire and the self-cocking mechanism is smooth. Also look for signs of element separation at the cemented groups, and verify that the mounting threads and retaining rings are intact, since barrel-mounted copies are frequently re-shuttered by previous owners.","specs":"The lens is a 355mm focal length with a maximum aperture of f\/9, made by Schneider-Kreuznach under the G-Claron process lens line.","faq":[{"q":"How much does a Schneider 355mm f\/9 G-Claron sell for at UK auction?","a":"Recorded UK hammer results sit between £130 and £375, with the price a given copy fetches depending mainly on shutter condition and glass clarity."},{"q":"What is a 355mm G-Claron worth today?","a":"Based on the current sales data, a typical value in 2026 falls in the £130–£375 range at auction, with shuttered examples in clean optical condition sitting toward the upper end."},{"q":"Is the G-Claron suitable for 8x10 photography?","a":"Yes — although designed as a process lens for flat copy work, the 355mm G-Claron is widely used on 8x10 and larger formats because it delivers ample image circle at typical working apertures."},{"q":"Why do prices vary so much between copies?","a":"The main drivers are whether the lens is in a working Copal shutter or bare barrel, the state of the coatings, and the absence of fungus, haze or separation."}],"confidence":45,"reasoning":"Only two sales records are provided and SPECS\/variants\/facts are empty, so pricing and technical detail are necessarily limited to what can be inferred from the model designation and the two hammer prices."}