前面谈到传统胶片的一些品牌与性质,接下来继续,胶片分正负片,正片即Positive Film,也称反转片,还可以称为幻灯片,其实一说幻灯片大家就亲切很多,小时候大家接触幻灯片很多,老师经常给大家放映幻灯片,里面的色彩极为感人,很多小朋友都想拥有一张,然后可以在晚上用手电筒自己投射在墙上。所以正片就是得到的影像和我们看见的黑白关系和色彩关系是一致的。他的特点就反差大、灰雾度低、清晰度高、感光度低,感光度低就是 In front of some of the traditional brands of film and nature, and then continue, the positive and negative film negative, positive film or positive film, also known as reversal film, also known as slides, in fact, a slide that we are all kind, as a child There are many slideshows, teachers often show slideshows for everyone. The colors are very touching. Many children want to have a slideshow, and then they can project themselves on the wall with a flashlight at night. So the positive is the image obtained and we see the relationship between black and white and color is the same. His characteristics on the large contrast, low fog, high definition, low sensitivity, low sensitivity is