Correlation between the effective brightness and effective radius observed in nearby spheroids. The orange circles and red triangles respectively represent the bulges and ellipticals from Kent (1985a). The red crosses are the Virgo cluster ellipticals from Caon et al. (1993). The orange diamonds are the bulge data from MacArthur et al. (2003). The red circles are the ellipticals from Kormendy et al. (2009). The small pink circles represent the sample of bulges studied by Gadotti (2009). The dashed line represents the Hamabe & Kormendy (1987) empirical relation.