"ˌ noun
Etymology: micr- + prism
: a usually circular area on the focusing screen of a camera that is made up of tiny prisms and causes the image in the viewfinder to blur if the subject is not in focus
"ˌ noun
Etymology: micr- + prism
: a usually circular area on the focusing screen of a camera that is made up of tiny prisms and causes the image in the viewfinder to blur if the subject is not in focus
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012