Figure 3
Visible-light image of a line-pair test target. (a) Full CCD imaging area (49 × 86 mm) with two test targets; (b) right-hand target magnified; (c) center area of the target magnified; (d) center area of the target magnified further. The figure scales, in line-pairs mm−1, in (b), (c) and (d) are indicated by arrows next to the corresponding six-line groups. No calibrations or corrections have been applied to the image, made with 12 µm pixels. |