新买了一些120胶卷,往冰箱里冷藏存放。在整理冰箱时,翻到了一包2003年生产的乐凯牌中华人民共和国第十届冬季运动会指定的黑白胶卷(图1),乳剂号5110108,有效期至2007年5月,也就是说这些黑白135银盐胶卷现在已经过期十年了。从理论上来讲,在冰箱里冷藏保存的黑白银盐胶卷过期十年也就是感光度会下降,灰雾度也有可能增加些,当然这可以在拍摄时增加些曝光量来弥补感光度的不足,在冲卷显影时加入点苯并 Newly bought some 120 film, refrigerated storage in the refrigerator. In order to sort out the refrigerator, turn to a pack of 2003 production of Lucky Brand black and white film specified in the 10th Winter Games of the People’s Republic of China (Figure 1), Emulsion No. 5110108, valid until May 2007, that is to say these black and white 135 Silver salt film has now expired ten years. In theory, refrigerated black and white silver halide film stored in the refrigerator expire ten years is the sensitivity will decline, the fog may also increase the number of more, of course, this can increase the exposure when shooting to make up for the lack of sensitivity, Add some benzene at the time of roll development