April 24, 2024
BON-TON / CDV Petzval LENS Brass Barrel - swirly bokeh
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Unmarked BonTon or CDV Petzval Lens fixed, internal aperture stop Here's a nice vintage lens mounted in brass. It is the type of lens tube that would be found on the special 4-lens plates made for making multiple photos efficiently. The optical elements fit the Petzval form: a cemented doublet in front and an air-spaced doublet in the rear (reference: Kingslake "Lenses in Photography", p131). There is a fixed aperture stop inside the barrel - this one has NOT been cut for waterhouse stops. The plane of focus is about 5 inches behind the edge of the barrel (the threaded end goes forward). The only marking is a "5" on the barrel. Very good condition: the lens elements are clean and free of dirt, haze and fungus. There's no separation. There are very faint, light scratches - not bad at all. There's a small amount of glue residue (?) at the edges of the rear element. The brass barrel is heavily tarnished. Please see my other auctions and store for more fine antique and vintage photo equipment. International bidders: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping)
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