Left: efficiency and contamination of point sources in different extended source samples using the VHS color selection as a reference. A large contamination at the bright end can be avoided by using infrared color selection and/or faint magnitude selection when the former is absent. Right: same measurements using the HSC-SSP DR2 catalog as a reference (see Section 3.2). Errors are 95% containment errors computed using a Bayesian approach for efficiencies as detailed in Paterno (2004), and cannot be visualized at this scale as they are ∼0.3%.