| Focal Distance | ระยะโฟกัส [การแพทย์] |
| focal distance | (n) the distance from a lens to its focus, Syn. focal length |
| hyperfocal distance | (n) the distance in front of a lens that is focused at infinity beyond which all objects are well defined and clear |
| 焦距 | [焦 距] focal length; focal distance #19,022 [Add to Longdo] |