Additional information:
Leitz Wetzlar Focotar 1:4.5/50mm is Enlargers & Film Processing lens had three main modifications.
Focotar - 1 1:4.5/ 50 mm.
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Production era - 1953-1970
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Code names - DOOCQ, 16781R
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Lens - Five element triplet optical design.
pre-1958 - Ernst Leitz GmbH Wetzlar Germany - Focotar f=5cm 1:4,5 (w/o GmbH on 1st 1952 version)
1958-1969 - LEITZ WETZLAR - FOCOTAR 1:4.5/50 (on head) + 16781R or DOOCQ (on barrel)
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Production era - 1970-1974
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Code names - DOOHF, 17581A known as LFE ~ Large Front Element
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Manufacturer - Schneider Kreuznach
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Lens - Five element Gauss design, with three elements before the diaphragm. It has larger diameter front and rear elements than the 16781R and 17582 designs.
Focotar - 2 1:4.5 / 50 mm
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Code no. - 17582
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Production era - 1974-1979 > 7,550 lenses
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Lens - Six element Gauss design with three elements before and three elements after the diaphragm.
Focotar - 3 1:4.5 / 50 mm
Posted by: Veerd Date of publication: 14.10.2018
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