There are no F7.5V standard stars (F7.5V) = 0.50 mag ; MorganAbt73/TableIII Teff(F7.5V) = 6220K ; Teff from smoothed SpT(Teff) trend BCv(F7.5V) = -0.030 [last updated 8/3/2018; adjusted so that BCv(5772K)=-0.08]