Amplitudes of the Planck HFI bolometer transfer function T(ω) (green), the low-pass filter K(ω) employed by Planck HFI to keep the high-k modes from blowing up (red), and the former divided by the latter (black), which is the resulting function applied to the data in Planck deconvolution method. The presented functions are in absolute amplitudes. The bolometer transfer function also has a complex component.