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回复 19# 邱QQ
多谢,这个帖子我以前也看过,但我只看了主楼…………哈哈~
另外后面的回复里有人的链接指向这段话:
Raw umber has a greenish-brown masstone in which the green shows through well when used in thin layers such as watercolor washes. When used thickly, especially in oil paints, umber will look to be a very dark, almost black, cool toned brown. The problem with using pigment names to name inks is that pigments have very different properties when used in different ways, even if it is chemically the same compound.
An additional problem with a pigment such as umber is that it is traditionally an earth pigment, and unlike synthetics, they have a very wide range of properties and colors depending on where it came from. Earth pigments were traditionally derived from dirt and clay collected from various locales. Because of this, different umbers tended to have slightly differing properties.
Umber as a pigment is traditionally has a slightly greenish-brown mass-tone, and it seems that diamine umber was formulated to somewhat imitate unsaturated watercolor washes done with the pigment umber, rather than the same pigment densely saturated in, say, oil or acrylic, which the vast majority of people would think of when they imagine pigments and paints. The particular umber they compared it to probably had a slightly more green than is typical. Then again, the ones who named the colors could just have made a mistake.
我觉得这个解释更详尽。 |
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