文档介绍：摄影曝光根底知识
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang claw on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
当我们正确地曝光了一幅彩色胶片时，得到的照片或幻灯片上的所有颜色都应该是鲜艳纯洁的。同样，当我们曝光了一幅黑白胶片时，最后照片上的所有影调也应该是非常鲜明的。
其中的技巧就在于懂得怎样正确地对胶片进行曝光。本课将讲述如下内容：
如何知道测光表应指向的位置；
如何解释测光表显示的内容。
为了有助于全面地理解这些内容，这里再次从如何曝光黑白胶片的根本知识入手。一旦知道了怎样曝光黑白胶片，如何曝光荣色胶片的问题便会迎刃而解了。
好了，下面就开始讲述怎样掌握完美的曝光技巧吧。首先，我们应该对曝光一幅黑白胶片时发生的一切有所了解。然后，再把问题转移到彩色胶片上来。我们知道，彩色胶片以三层黑白乳剂为根底，这三层黑白乳剂与三原色有关，并从三原色中产生彩色影像。.
曝光黑白胶片时发生了什么
我们已经知道，当光线照射到乳剂时，卤化银中的微小晶体会发生变化，当显影时，受到光线照射而发生变化的晶体会形成黑色的金属银晶体。结果画幅中受到光线照射的区域会转变为底片上暗黑色的金属银区域。
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defens