小孔成像-相机基本原理 barrier with object a pinhole filr The barrier blocks off most of the rays This reduces blurring Aperture Opening of the pinhole 7
小孔成像-相机基本原理 • The barrier blocks off most of the rays • This reduces blurring • Aperture = Opening of the pinhole 7
焦距 18 mm 34 mm 5 mi
焦距
光圈 pinhole too big bright and blurred LUZ pinhole right size OPTICA dark and crisp FOTOGRAP画 pinhole too small: OPTICA dark and diffraction blur 9
光圈 9
快门(曝光时间) I sec
快门（曝光时间）
增加透镜 object lens film circle of confusion “ in focus The lens focuses light onto the film
增加透镜 The lens focuses light onto the film 11