durst-neonon-50c2

Durst Neonon 50/2.8 [Pentax V2]

AKA Agfa Magnolar enlarger lens. Made in Japan (Pentax?). Version 2 is rare and has a four-row stippled rubber aperture ring that functions as a stepless aperture selector. Rear element housing may be slightly shorter than V1.

durst-neonon-50b1

Durst Neonon 50/2.8 [Pentax V1]

AKA Agfa Magnolar enlarger lens. Made in Japan (Pentax?). Version 1 has a three-row stippled rubber aperture ring that functions as a stepless aperture ‘clutch. Serials (all 5xxxxx) engraved on fascia.

neonon-50a1

Durst Neonon 50/2.8 [Pentax V3]

Made in Japan (Pentax?). Version 3 has a black body with silver nose ring, a knurled aperture ring and 5/6-digit serials beginning with zero printed on a sticker. The front ring engages and disengages click stops. Colour correction: 380-700nm.

Pentax-EL 50/2.8

Probably AKA Agfa Magnolar / Durst Neonon enlarger lens – all made in Japan by Pentax. Marked ‘Asahi Opt. Co.’.