Figure 7
Exposure time requirement for a given resolution, deduced from the width of the TF for the HIO algorithm with output averaged using phase adjustment in reciprocal space (solid squares) and cross-correlation in real space (open circles). The solid line is the least-squares linear fit to the former data set for resolution higher than 30 Å. Other lines are given for comparison with simple analytical predictions from Howells et al. (2005) (dashed line), Shen et al. (2004) (dotted line) and this paper (dash-dotted line) with parameter P = 5. |