暗室问答问:怎样用彩色底片放制黑白照片? 答:彩色底片上记录了景物所反射的蓝、绿和红光,分别形成了黄、品红和青三个彩色负像,并整合在一起。普通黑白相纸只感受蓝紫光,所以,如果彩色底片用普通黑白相纸印放黑白照片,则只能将彩色底片中的青色和少量黄色负像记录在照片上,而品红负像对黑白相纸几乎不起作用。所以,印放出的照片只能代表景物的红光和部分绿光层次,在影 Darkroom Q & A Q: How to make black and white photos with color negatives? A: The blue, green and red light reflected from the scene are recorded on the color negatives, forming the three color negatives of yellow, magenta and cyan, respectively, and are integrated together . Ordinary black and white photo paper only feel blue and violet light, so if the color film with ordinary black and white photo paper to print black and white photos, you can only color film negative and a small amount of yellow negative image recorded in the photo, and negative magenta like black and white Photo paper almost does not work. Therefore, printed photos can only represent the scene of the red light and part of the green level, in the shadow