  We study the critical properties of the non-interacting integer quantum Hall
to insulator transition (IQHIT) in a "dual" composite-fermion (CF)
representation. A key advantage of the CF representation over electron
coordinates is that at criticality, $\textit{CF states are delocalized at all}$
energies. The CF approach thus enables us to study the transition from a new
vantage point. Using a lattice representation of CF mean-field theory, we
compute the critical and multifractal exponents of the IQHIT. We obtain $\nu =
2.56 \pm 0.02$ and $\eta = 0.51\pm 0.01$, both of which are consistent with the
predictions of the Chalker-Coddington network model formulated in the electron
representation.
