tonal value造句

Benday process: a method of mechanically transferring dots or texture patterns to produce tonal value in line drawings.

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

The tonal response curve defines how tonal values in the raw image are mapped.

In a negative copy the tonal values are reversed.