Middle tones (Mid tones): Tonal ranges between highlights and shadows. In a half-tone, it is those areas having tonal value of 30% - 75% .In an original, it is those areas having density of 0.5 - 1.0.

• 中间色调:在光部和暗部间的色调范围。在半色调图片内，它是30%25至75%25网点的部份。在原稿上，它的密度范围是0.；5至1