c**n
发帖数: 40 | 1 Usually, when you print, all you adjust is the exposure time
and contrast, the dilution for developer and developing time
should be kept standard.
I am not sure what we used :-P, it's the assistant's job, I
have a vague recollection that it's 1:2.
We used ILFORD Multigrade IV RC paper, pretty standard for
schoold use.
Your time is not awefully short, although the time should be
>6 secs usually. I usually use F8 or F11, for 8X10 prints,
the time is f11, 12-18s, depending on the bulb of the
enlarg | a*t
发帖数: 2596 | 2
对,实际的操作中影响暴光时间的主要因素还有光源.
放大倍数高的时候,灯炮离的远就会增加暴关时间,
还有滤色片什么的.
我在低放大倍数的时候,在灯泡前面的滤色片抽屉里
放一张白纸以减弱光亮.另外也可考虑低瓦数的灯泡. |
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