Newcon Optik NVS 7-4X - Manual (Page 11)

8
Spatial frequency-contrast characteristic
Frequency, lines/mm Contrast transfer
coefficient (XT)
2.5 0.88
7.5 0.72
15.0 0.50
Field of view cleanness
SPOTS DIAMETER ZONE 1 ZONE 2 ZONE 3
IN MICRONS Ø5.6MM Ш5.6-Ш14.7MM Ш14.7-Ш17.5MM
> 230 0 0 0
150 - 230 0 1 1
75 - 150 0 1 2