The APO-LANTHAR 50mm F3.5 25th Anniversary is a Limited Edition model in gray, olive, or navy painted exterior. Production quantity will be 250 lenses of each color. Based on the previously released APO-LANTHAR 50mm F3.5 Type I (two-tone), the black-finished focusing helical and hood have been changed to gray, olive or navy. The hood is made of heavy brass and knurled at the tip. The lens is engraved with a limited edition number. Also included is a chrome-finished brass hood cap and a special lens rear cap made of brass-based all-metal parts. A convenient lens carrying pouch is also included.
The APO-LANTHAR 50mm F3.5 Type I is an extremely high performance manual focus standard lens optimized for full size VM-mount sensors. The apochromatic design thoroughly eliminates chromaticaberration on axis and other aberrations, while pursuing ultimate performance in terms of resolution andcontrast reproduction (see attached MTF chart). While adopting a maximum aperture of F3.5, the lens iscomposed of eight elements in six groups, four of which are made of anomalous partial-dispersion glass to achieve uncompromising optical performance.
Equipped with a high-precision rangefinder-linked mechanism, and the silky feel of the all-metal helicoid allowing the photographer to experience the true joy of focusing using a traditional rangefinder. The minimum focusing distance of the Type Ⅰ is 0.45m. The rangefinder close focus is 0.7m (depending upon camera capability), which is linked to the rangefinder. A mechanism is provided to recognize the junction point of the rangefinder-linked range by a clicking sensation during focusing operation. The filter diameter is a retro-inspired φ34mm. As a tribute to classic rangefinder lenses that appeared in the mid-20th century, the more expensive vintage style straight slot screw heads were chosen instead of less expensive modern Phillips head.
