  In dense clusters, higher densities at early epochs as well as physical
processes, such as ram pressure stripping and tidal interactions become
important, and can have direct consequences for the evolution of bars and their
host disks. To study bars and disks as a function of environment, we are using
the STAGES ACS HST survey of the Abell 901/902 supercluster (z~0.165), along
with earlier field studies based the SDSS and the Ohio State University Bright
Spiral Galaxy Survey (OSUBSGS). We explore the limitations of traditional
methods for characterizing the bar fraction, and in particular highlight
uncertainties in disk galaxy selection in cluster environments. We present an
alternative approach for exploring the proportion of bars, and investigate the
properties of bars as a function of host galaxy color, Sersic index, stellar
mass, star formation rate (SFR), specific SFR, and morphology.
