Nikon COOLSCAN V ED - Image quality performance standards

VRA53801-R.3609.A
- R3 ･ -
LS-50
・Diagonal line feeding accuracy:
Between adjacent pixels
1 pixel or less for any adjacent pixels in the sub-scanning direction
Small area
4 pixels or less within any continuous 210 lines in the sub-scanning direction
・Repeating accuracy:
1 pixel or less
4. Image quality performance 1
・Total resolving power (MTF):
RGB-color
MTF of 35 lines/mm chart area should be 20% or more
IR-color
MTF of 17.5 line/mm chart area should be 20% or more
・Color registration:
Among RGB
1 pixel or less
IR-color
Scanning misalignment from RGB image should be 4 pixels or less
・Flare:
Data spread in black-and-white boundary areas should be 3.92% (10/255 LSB) or less
・Ghost (image):
Data spread in black areas should be 3.92% (10/255 LSB) or less
・Color reproduction:
Positive lm
Average ΔE of 24 patches should be 6 or less
ΔE of each patch should be 12 or less
Negative lm
Average ΔE of 24 patches should be 8 or less
ΔE of each patch should be 20 or less; ΔE of No.19-23 should be 15 or less