Finder Group Eyecup 1 & Dioptric Correction Lenses 1
|Summary||Main Characteristics||Notes - Related Units|
|The Eyecup 1 prevents glare and loss of contrast caused by stray light
hitting the viewfinder eyepiece and accepts any of the eight Dioptric Correction Lenses 1.
The Dioptric Correction Lenses 1 are available for adjustment of individual eye acuity.
|The Eyecup 1 is indispensable to prevent stray light passing through the
viewfinder eyepiece during manual exposures.
The eyeshade is detachable from the inner socket of the Eyecup for mounting a Dioptric Correction Lens.
The photographer can observe a clear viewfinder image when he inserts the optimum Dioptric Correction Lens into the inner socket of the Eyecup.
The eight Dioptric Correction Lenses available include +2, +1, 0 diopters for long sight and -1, -2, -3, -4 and -5 for short sight.
|The Eyecoupler is essential when the 250 Film Back 1 and Eyecup 1 are used
The number engraved on each Dioptric Correction Lens indicates the final diopter in conjunction with the OM body.
|Number engraved on Dioptric Correction Lens
(final diopter in comjunction with OM body)
|Initial diopter of each Dioptric Correction Lens||Application|
|+2||+4||Hyperopes & presbyopes (or those who wear glasses of visual acuity from +4 to +2 diopter or glasses of focal length from +10 to +20 in.)|
|-1||+1||Slight myopes (with glasses of from +1 to -1 diopter or +40 to -40 in.)|
|-4||-2||Medium myopes (with glasses of from -2 to -3 diopter or -20 to -15 in.)|