教学幻灯片拍摄时的曝光问题

Brief discussion on exposure of teaching slides

教学幻灯片作为现代教学媒体在教学中应用得非常广泛,目前多采用彩色反转片来进行拍摄.主要介绍在拍摄教学幻灯片时对曝光的要求,以及几种测光方式和补偿方法.在拍摄教学幻灯片时,由于曝光量的多少将直接影响幻灯片的密度、影调和色彩,所以要根据不同拍摄对象的不同要求,采取相应的测光及补偿方法,才能拍摄出高质量的幻灯片.

Teaching slide,as modern teaching media,is applied very extensively in teaching.At preseut pictures are taken mostly with color reversal film.This paper mainly discuss the requirement of exposure,some kinds of light detecting methods and compensating methods.The amount of light exposure has much to do with the density,tone and color of the slides during the process of taking.Slides of high quality can not be acquired unless proper light detecting and compesating are taken on the basis of objects which are shot.