The light curve of a type Ia supernova in a cosmologically remote galaxy requires two particular corrections. The time axis must be corrected for time dilation, and the apparent-magnitude axis must be corrected for redshift dimming. It is my understanding that the "distance" determined directly from such a SN is the "luminosity distance". Question #1: Is this determination performed before, or after making these corrections? Question #2: If after (as I would expect), what is the physical explanation for the extreme faintness and for the extreme values of the "distance"?