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Item Name : Prototype Carl Zeiss Jena 55mm f5.6 Lamegon Barrel Lens with Front Attachment
Serial no. : V340 991413M,V3401 992298M
Reference : Lamegon already very rare and this even Extremely Rare because Prototype !!, regular Lamegon with build-in shutter and this one is barrel lens.Lamegon is one of the few lenses delivering some 250 l/mm and was made in very limited numbers,quasi-symmetrical 8e/4g (8 elements in 4 groups) design,with less than 5 micron distortion over the entire field. It has originally been designed based on a simplified Biogon design,initially for aerial imaging,later also for microreproduction,hence the very high resolution and flatness of field. One of the former lens designers told that especially the glued inner three elements demanded a very high manufacturing effort to produce and that the inner air gaps were adjusted per batch (!!) to compensate the effect of refraction differences in glass melt batches.
Glass Description : very very faint cleaning marks,no haze,some black paint lost underneath front element
Remark : with front group attachment (VL 55.3/M77x0.75 W f.NBK 2.67m V3401),992298M
Cosmetic Condition  : M-
Price : $ 


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