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影像数字化过程中的术语与传统摄影的关系
江湖色diwa2000-11-30 14:54:52
。 diwa 影像数字化过程中的术语与传统摄影的关系 1、 动态范围 2、比特 3、分辨率 4、纳奎斯特极限(Nyquist
坏了， 我撞DIWA的枪口上了， 打倒！！
江湖色redrocks2000-11-29 10:02:52
楞没看出那是300的头。。 让这家伙给抓住了小辫子 ：-(( 横。。 横竖我是红石头。。 头已破血已流。。 不过下次俺 得小心点。。 DIWA这家伙眼贼尖。。 嘻嘻坏了， 我撞DIWA的
answer from an image guru
江湖色diwa2000-11-29 08:58:02
Dynamic range is not well defined. It is very important, but there is no formal specification to define it numerically, and it can be about any value that the advertising department wants to call it. Specs for inexpensive scanners often confuse reality, stating theoretical maximum instead of measured results. Imacon is one the of best brands. 4.0 is logarithmic, and 4.0 is 10 times greater range than 3.0. 4.0 is not an absolute limit, because it is the mathematical logarith...