The Luminance Discrimination of the Human Eye

E. M. Lowry

Data are presented to show not only the effect of the luminance to which the eye is adapted on its ability to discriminate differences in luminance, but also the effect of the visual angle upon this important ocular function. That luminance discrimination depends upon whether the observer's attention is fixed upon a highlight or shadow region is shown by data on threshold luminance when scenes are being viewed in which the luminance varies over a wide range.

Print ISSN
Published
1951-09
Content type
Original Research
DOI
10.5594/J11331