  The pressure effect on the resistivity and superconducting Tc of prestrained
thin films of the iron chalcogenide superconductor FeSe0.5Te0.5 is studied.
Films with different anion heights above the Fe layer showing different values
of ambient pressure Tc's are compressed up to a pressure of 1.7 GPa. All films
exhibit a significant increase of Tc with pressure. The results cannot solely
be explained by a pressure-induced decrease of the anion height but other
parameters have to be considered to explain the data for all films.
