Petrosian asymmetry (A_P) vs. all alternative asymmetry measurements. A_H is the Holmberg asymmetry without any smoothing of the images, while a 1 × 1 kpc smoothing box has been applied to (Petrosian), (Holmberg), and dynamical A_dyn asymmetry. The uninterrupted lines are least square fits to the similarly colored data points. The dashed line has a slope of 1. The dotted line is an extrapolation from the correlation of Conselice (2003) for E, S0, Sa–b, Sc–d and Irr, which lie beyond A_P ~ 0.6. All asymmetries here are from the I band, in order to facilitate comparison with Conselice (2003).