title: Instrument accommodation compensation of single lens reflex camera viewfinders.
abstract: An instrument accommodation compensation is built into the viewfinders of single lens reflex cameras. The extra accommodation required when using these cameras can cause difficulty for some patients. This paper presents a simple method for measuring the instrument accommodation compensation of reflex cameras and presents the results of such measurements for several cameras.
authors.affiliation: School of Optometry, University of Missouri, St. Louis 63121-4499.
authors.forename: W F
authors.initials: WF
authors.lastname: Long
mesh_terms: D000065:Accommodation, Ocular; D006801:Humans; D010781:Photography