  We have detected the weak lensing signal induced by the cluster of galaxies
MS 2053-04 (z=0.58) from a two-colour mosaic of 6 HST WFPC2 images. The best
fit singular isothermal sphere model to the observed tangential distortion
yields an Einstein radius r_E=6.2"+-1.8", which corresponds to a velocity
dispersion of 886^{+121}_{-139} km/s. This result is in good agreement with the
observed velocity dispersion of 817+-80 km/s from cluster members.
  MS 2053 is the third cluster we studied using mosaics of deep WFPC2 images.
For all three clusters we find good agreement between dynamical and weak
lensing velocity dispersions, in contrast to weak lensing studies based on
single WFPC2 pointings on cluster cores. This result demonstrates the
importance of wide field data. We have compared the ensemble averaged cluster
profile to the predicted NFW profile, and find that a NFW profile can fit the
observed lensing signal well. The best fit concentration parameter is found to
be 0.79^{+0.44}_{-0.15} (68% confidence) times the predicted value from an open
CDM model. The observed mass-to-light ratios of the clusters in our sample
evolve with redshift, and are inconsistent with a constant, non-evolving,
mass-to-light ratio at the 99% confidence level. The evolution is consistent
with the results derived from the evolution of the fundamental plane of early
type galaxies. The resulting average mass-to-light ratio for massive clusters
at z=0 is found to be 239+-18+-9 M/L_B. (abridged)
