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166 - Carl Zeiss Jena | R-Biotar 0.85/5.5 cm
Starting price
€300The reserve price is the minimum price accepted by the seller. Bidders cannot see this price. To win an item, you must place the highest bid and meet or exceed the reserve price.
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Estimation
€600 - 800Sale fees
Carl Zeiss Jena | R-Biotar 0.85/5.5 cm Estimate: €600–800 Year: 1945 Serial No.: 2747757 Condition: B English: Extremely fast R-Biotar manufactured for specialized X-ray screen photography. The R-Biotar was designed to photograph the very low-luminance fluorescent image produced by contemporary X-ray equipment. To maximize light transmission, the lens was manufactured without an iris diaphragm, operating permanently at its extraordinary maximum aperture of f/0.85. Unlike conventional double-Gauss Biotar photographic lenses, the R-Biotar employs a special optical design based on the Petzval principle, developed specifically for radiographic applications. The lens is extremely rare and features very clean elements. It can be closely compared to the R-Biotar no. 2747802 sold at the 11th WestLicht Camera Auction. German: Extremely fast R-Biotar for specialized X-ray screen photography. The R-Biotar was developed to photographically capture the very faint fluorescent image produced by contemporary X-ray machines. To maximize light transmission, the lens was manufactured without an iris diaphragm and always operates at its exceptional maximum aperture of f/0.85. Unlike conventional photographic Biotar lenses of the double-Gauss type, the R-Biotar features a special optical design derived from the Petzval principle for radiographic applications. The lens is extremely rare and features very clean elements. The R-Biotar No. 2747802 was sold at the 11th WestLicht Camera Auction.
Auction details
OstLicht Camera Auction: Fall 2026Auction house
OstLicht Photo Auction +43 6 64 20 11 850 coeln@ostlicht.orgDelivery is optional. You can use the carrier of your choice. The stated price does not include the lot price or the auction house fees.