K corrections divided by redshift, z, as a function of filter reference wavelength for stars of different temperatures (same scale as in Fig. 3) for the simplified case without extinction. The fiducial 10 d MW Cepheid analog is shown as a thick black solid line, and the fiducial TRGB star as a thick dashed black line. K corrections in the JWST/NIRCAM F200W and 2MASS K_s filters are particularly insensitive to temperature differences. K corrections become increasingly positive and less filter-sensitive with wavelength.