我国有些地区,在使用宝丽来黑白胶片拍摄人像照片后,发现有些照片在保存2—3年,有的甚至1年后就开始泛黄、影像密度变浅,有些照片的影像已无法辩认,给工作带来了损失。为使使用者了解宝丽来黑白照片的保存特性、存放方法及问题出现的原因,贾荣炽同志编译了此文,供参考。 In some areas of our country, using Polaroid black and white film to take portraits, some photos were found to be yellowed after being stored for 2-3 years, some even one year later, and the image density became shallow. Some of the photos were indecisive and could not be identified Work has brought loss. In order to make users understand the preservation features of Polaroid black and white photos, storage methods and the reasons for the problems, Comrade Jia Rongchi compiled this article for reference.