Barnett M. Clinedinst

Barnett M. Clinedinst, Sr. (December 1835 – December 21, 1900) was an American photographer and inventor. He invented the viewfinder and the mirror-and-prism "reflex" arrangement for which the single-lens reflex camera is named.

He was born around December 1835 or 1837 in . He was a bugler during the American Civil War for Stonewall Jackson.

He died on December 28, 1900 in Washington, DC.

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