Olympus 40mm F2. lens.
An astonishingly compact , light and thin lens with a bright F2 aperture , in a very useful, slightly wide-angle “ semi-standard “ focal length. Features completely new 6-elements in 6-groups construction, with four elements of high refractive , low dispersion glass. Superb optical performance with minimum curvature of field and excellent contrast. Close 30cm (1.2 ft ) minimum focusing distance gives 1/5 life-size images. An outstanding lens for creative work, news photography , snapshots, travel , etc.
A very rare to find lens , there were not many produced.
Specifications
Angle of view : 56 º
Optical construction : 6 elements in 6 groups.
Diaphragm operation : Automatic.
F–stop range : 2~16.
Minimum focus : 0,3m (11.8)
Minimum field size : 12x18cm ( 4.7 x 7.1 )
Focusing : Straight helicoids.
Weight : 140 grams ( 4.9)
Length : 25mm ( 0,98 )
Maximum diameter : 60mm ( 2.4 )
Filter size : 49mm.Ø
Note : Hood and filter diameter is 49mm.
Suitable focusing screens : 1-1,1-2,1-3, 1-4, 1-5, 1-6, 1-10, 1-13 and 1-14.