Doc:Glossary/Focal Length
< Doc:Glossary
2011年10月15日 (土) 18:54時点におけるwiki>Mindronesによる版 (moved Doc:Reference/Glossary/Focal Length to Doc:Glossary/Focal Length)
Focal Length
Is the distance along the optical axis from the lens to the focus (or focal point). The inverse of a lens' focal length is called its power.