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答:印相是个工艺过程,除了基本操作外,还有一些实用的加工技巧,它比一般印相操作要求高,操作过程也相对复杂一些。下面谈一下常用的加工技巧。1.局部遮挡印相的局部遮挡,就是局部减少曝光。它能纠正底片的反差太大、影调不匀的缺点,使照片深淡适宜。拍摄时,由于主观的疏忽,或客观条件的限制,使底片产生反差太大的缺点。如仍用平常的印相方法,原来密度小的部位,不仅损失了应有
A: Printing is a process, in addition to the basic operation, there are some practical processing techniques, it requires higher than the average printing operation, the operation process is also relatively more complicated. Now talk about the common processing techniques. 1. Local occlusion India partial occlusion, is to reduce the local exposure. It can correct the contrast of the film is too large, the shortcomings of uneven tone, making the picture light suitable. Filming, due to subjective negligence, or the objective conditions of the limitations of negative contrast produced too shortcomings. If still use the usual method of printing, the original density of small parts, not only lost due