Dynamic light scattering is a widely used technique for the determination of particle size in colloidal systems. However,the resolution of the technique is limited by the inherently low information content of the data and the nonunique nature of the data analysis. In this paper, the extra constraints provided by the simultaneous analysis of multiangle dynamic and static light scattering data are used to improve the resolution, and reduce the run-to-run variability, of the resulting particle size distributions. It is shown that the multiangle approach provides considerably more robust particle size determinations than any single angle experiment of similar total duration. In addition, the multiangle analysis is better able to resolve closely spaced components in multimodal samples.