We summarize the results from analyzing six clusters of galaxies at 0.14 < z < 0.40 observed with the Hubble Space Telescope Advanced Camera for Surveys .
We derive deep composite luminosity functions in B , g , V , r , i and z down to absolute magnitude of \sim -14 + 5 log h mag .
The luminosity functions are fitted by a single Schechter function with M _ { BgVriz } ^ { * } = -19.8 , -20.9 , -21.9 , -22.0 , -21.7 , and -22.3 mag .
and \alpha \sim -1.3 for all bands .
The data suggests red sequence dominates the luminosity function down to \geq 6 mag .
below L _ { * } , the dwarf spheroidals regime .
Hence , at least at z \sim 0.3 , the red sequence is well established and galaxies down to dwarf spheroidals are assembled within these clusters .
We do not detect the faint-end upturn ( M > -16 ) that is observed in lower redshift clusters .
If this is real , the faint-end population has originated since z = 0.3 .