Definition of pentaprism in English:
A prism having a five-sided cross section with two silvered surfaces, giving a constant deviation of all rays of light through 90°, used chiefly in the viewfinders of single-lens reflex cameras.
- DSLR (Digital Single Lens Reflex) by definition have optical viewfinders, usually consisting of a instant-return mirror and a pentaprism.
- I was just looking through my junk bin over the weekend and I found that I have a number of pentaprisms taken out of 35mm SLR cameras.
- Pros, from what I've read, is that mirror pentaprisms are lighter, can be made smaller to save space, and are cheaper to manufacture than glass pentaprisms.
Definition of pentaprism in:
- US English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia