How to use a Split Focus Diopter | Shanks FX | PBS Digital Studios - YouTube
Accommodation of the Eye to Different Focus Distance
Diopters - "The Split Field Lens" by Ira Tiffen - British Cinematographer
SOLVED: Question 15 (10 points) The 2 diopter lens is used for man using glasses cm from his cyes: What is the distance t0 the far point for him using these lenses?