We report the dark conductivity and photoconductivity (\ensuremath{\sigma} and \ensuremath{\Delta}\ensuremath{\sigma}) in sublimed films of ${\mathrm{C}}_{70}$, ${\mathrm{C}}_{60}$, and ${\mathrm{K}}_{\mathit{x}}$${\mathrm{C}}_{70}$. In comparison with ${\mathrm{C}}_{60}$, the maximum quantum efficiency of ${\mathrm{C}}_{70}$ in air (\ensuremath{\sim}5\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}3}$) is two orders of magnitude higher. The frequency-response range of the photoconductivity of ${\mathrm{C}}_{70}$ is wider than that of ${\mathrm{C}}_{60}$ as well. The disorder and charge localization are important for the charge transport in ${\mathrm{C}}_{70}$, reflected in a bimolecularlike recombination and a large temperature dependence of the dark conductivity. The Fowler plot suggests that the energy gap of ${\mathrm{C}}_{70}$ is smaller (1.5 eV) than that of ${\mathrm{C}}_{60}$ (1.7 eV). The temperature dependence of \ensuremath{\Delta}\ensuremath{\sigma} for ${\mathrm{C}}_{70}$ has a local peak between 260 and 270 K, which is possibly related to the freezing of the orientational disorder in ${\mathrm{C}}_{70}$ below 270 K. The photoconductivity in ${\mathrm{K}}_{\mathit{x}}$${\mathrm{C}}_{70}$ is extremely small, probably due to the charge delocalization which increases the recombination rate.