Canon CXDI-1 Operation Manual page 88

7. Processing the Image (QA Mode Screen)
Starting level of low density
As shown at the right, a smaller starting
level for low density results in a narrower
effect range (shaded part).
– 80 –
Distribution
frequency
Efficacy range
Starting level high
Distribution
frequency
Efficacy range
Starting level low
Pixel
value
Pixel
value