Anomalous dispersion optical glass is employed to reduce chromatic aberrations, which results in APO-quality lens performance when focused from infinity to 1:2 magnification, and significantly reduces chromatic aberration from 1:2 to 1:1 magnification. The optical engineering and multi-coatings of this lens achieve excellent color balance, high contrast and high resolution over the entire focusing range, which is an extraordinary accomplishment for a Macro lens. The barrel design reduces flare significantly.
Mamiya uses eco-glass, which contains no lead or arsenic, maintaining the company's "Earth-friendly, Nature-friendly" policy.
MF (Manual Focus) 120mm f/4 Portrait/Macro Specifications
Optical Construction: 9 elements, 8 groups
Angle of View: 33'
Minimum Aperture: 32
Focusing System: Manual (focus confirmation)
Minimum Focusing Distance: 1.3 ft. (40 cm)
Maximum Magnification: 1:1
Area Covered: 1.65 x 2.25" (42 x 56 mm)
Equivalent 35mm Focal Length: 73mm
Filter Size: 67mm
Lens Hood: Built-in
Dimensions (L x W): 4.4 x 3.25" (111 x 83mm)
Weight: 1.8 lbs (835g)