Share this entry

Share this page

microprism

Line breaks: micro|prism
Pronunciation: /ˈmʌɪkrə(ʊ)ˌprɪz(ə)m/

Definition of microprism in English:

noun

[usually as modifier]
An area of the focusing screen of some reflex cameras which is covered with a grid of tiny prisms and splits up the image when the subject is not in focus.
Example sentences
  • An array of lenticular microlenses may be positioned to accept the output of the microprisms so that the light exiting from the microlenses is a substantially collimated light source.
  • Plain screens are available without the central split-image and microprisms, and these are suitable for × 1 to about × 4.
  • Be careful to position your eye in the center of the finder to be able to see all the microprisms; some will black out if your eye is uncentered.

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day peart
Pronunciation: pɪət
adjective
lively; cheerful