The Konica Hexanon AR 4/200mm was the successor to the two versions of the Hexanon AR 3.5/200mm. Unlike its precedessor, it has a simple [5/5] design with a positive triplet master lens (in front) and a negative doublet at the rear end. This construction can be found in most 4/200mm (and many 2.8/200mm) lenses of the late 1970s and early 1980s. When low dispersive glass (LD glass, v=70) was used for the two postive lenses in the front element, the chromatic aberration was sufficiently controlled (e. g. Canon new FD 4/200mm IF). If ED glass (v=80) was used, a nearly perfect correction of the chromatic aberration could be achieved (e. g. Nikkor AiS 2.8/180mm ED).

 

It seems that Konica did neither use LD nor ED glass for its Hexanon AR 4/200mm lens - the lateral CAs are stronger than the CAs of most contemporary 4/200m lenses, and detail reslotin in the corners isn't as good. While the differences aren't huge, they are clearly visible (see test images below). Probably Konica has used "ordinary" glass with an Abbé number of about v=64 for the two positive lenses in the front triplet.

 

It may come as a surprise to many that the huge (cheaper) Konica Hexar AR 4/200mm actually performs better than the smaller Hexanon AR 4/200mm (see images below).

 

Konica Hexanon AR 200mmf4 section Konica AR 200mmf4
 
KONICA HEXANON 200mm 1:4                 
(5 Linsen / 5 Glieder)

 

 

Das Konica Hexanon 200mm 1:4 (nicht zu verwechseln mit dem Konica Hexar 200mm 1:4!) ist eine relativ kleine und leichte Festbrennweite, die sich von optischen Aufbau her stark an analoge Festbrennweiten in andern Systemen anlehnt (zB an die beiden Versionen des Minolta MD 4/200mm, das Nikkor Ai /AiS 4/200mm oder das Mamiya Sekor E 4/200mm).

An 24 MP Vollformat ist die Abbildungsleistung praktisch identisch mit derjeniger vieler 200mm 1:4 Objektive aus derselben Zeit (zB Nikkor Ai 4/200 mm, Minolta MD-II 4/200 mm, Pentax SMC Takumar M 4/200 mm usw.).

 

Test 200mm lenses