| 摘要 |
PURPOSE:To make focusing accurate by providing a display light source of focusing and nonfocusing and displaying its display information within the visual field of the finder by making use of the optical path of the finder in the single-lens reflex camera having a TTL finder. CONSTITUTION:When subject lignt L1 focuses at a photoelectric conductive element 92 through a focus detecting lens 91, namely, when the photographing optical system focuses, the output from the element 92 lets the small light source 101 of a display part 10 be lighted by way of an arithmetic circuit 93. The light thereof passes through a lens 103, is reflected by a quick return mirror 2 and images a spot on a focal plate 3. The spot image thereof is visible in the finder visual field. Thereby, the focusing of the camera may be accomplished accurately and readily. |
