密度是缩微胶片经过拍摄曝光和冲洗加工后，其影像还原黑化的程度。密度的高低是衡量缩微胶片质量的重要技术指标，它直接影响到被摄原件影像还原的状况。因此，提高缩微胶片的质量，应严格对缩微胶片影像密度进行控制，才能获得理想的密度。１保证拍摄照度充分均匀要保证... Density is the extent to which the microfilm reduces and blackens after image exposure and processing. Density is an important measure of the quality of microfilm technical indicators, which directly affect the recovery of the original image of the situation. Therefore, to improve the quality of the microfilm, the microfilm image density should be strictly controlled in order to obtain the desired density. 1 Ensure that the shooting illumination fully uniform to ensure that ...