Interesting facts about contrast vision:
Contrast vision is a function of vision closely related to visual acuity. Both functions, however, are not identical: contrast vision allows us to distinguish objects from each other to perceive them. Visual acuity on the other hand refers to how well we can recognise contours and details.
Danubiana Meulensteen Art Museum, Bratislava
The Feuerle Collection, Berlin
CEA Design Showroom, Milan
|Type of visual task||Contrast rendering||CRF level||CRF mean value||CRF minimum|
|mainly glossy materials, e.g. with graphic works||high||1||1.0 < CRF||> 0.95|
|Satin matt materials,
e.g. in offices and schools
|medium||2||0.85 < CRF < 1.0||> 0.7|
|Work with matt material||low||2||0.7 < CRF < 0.85||> 0.5|
Winter sports people, especially skiers, are familiar with whiteout and they colloquially call it 'snow blindness'. Ground covered in snow, a bright horizon or snowfall can make it difficult or impossible to see your own surroundings. This is where contrast vision no longer functions.