Leitz Focotar 50/4.5 [V5: LFE]

Xenotar enlarger lens unofficially known as Large Front Element. Marked Leitz Wetzlar but not always Focotar. Made by Schneider, featuring Schneider serial numbers. [Cat 17581A]. Catalogue number often wrongly identified as DOOHF. Some vignetting on GFX at infinity focus.

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Weight	135 g
Dimensions	50 mm
Focal Length (mm)	50
Image Circle (mm)	56
Max Aperture (f)	4.5
Min Aperture (f)	16
Aperture Blades	Circular
Elements	5 / 4
Flange-Focal Distance (mm @ ∞)	43
RF/L Extension (mm)	23
Rear Mount	M39
Front Thread	None
Production	1970-1974
Serial Numbers	11458893-12364598