Résumé
We discuss the formation of G-band bright points in terms of standard fluxtube modeling, in particular the ID LTE models constructed by Solanki and coworkers. Combined with LTE spectral synthesis they explain observed G-band bright point contrasts quite well. The G-band contrast increase over the continuum is due to the enhancement of the hot-wall effect by CH depletion within the fluxtube. The modeling predicts that the CN band at 388 nm shows magnetic elements at yet higher contrast, which was tested using the last light of the Swedish Vacuum Solar Telescope on La Palma. The issue whether the standard fluxtube models have erroneous temperature stratifications due to neglect of NLTE irradiation remains open. It is important because the stratifications imply considerable heating.