| Edge | No of columns | Maximum |
| or rows vignetted >10% | vignettinga | |
| +Y | 1 | 14% |
| -Y | 8 | 54% |
| -X | 7 | 36% |
| +X | 2 | 15% |
| a The last column represents the maximum extinction of a vignetted pixel, i.e. the percentage of light absorbed in the pixel row or column, with respect to the mean of the field. |