市场上的新型胶片和相纸银盐胶片尽管受到电子影像无情的冲击，但仍顽强地与之抗争，许多胶片厂随着最近一系列新银盐材料的开发而更坚定其信念。新的材料包括可变反差黑白相纸、新型现代黑白片和一些新的彩色片、彩色相纸。黑白片虽然印刷、文件工作更倾向于应用彩色材料... New films and photographic silver films on the market, despite being relentlessly hit by electronic images, are still stubbornly battling against them, with many film studios firming their faith with the recent development of a new line of silver salts. New materials include variable contrast black and white photo paper, new modern black and white film and some new color film, color photo paper. Although black and white film printing, document work more inclined to use color materials ...