Comparisons between the infrared luminosity functions derived using PACS observations and those derived using MIPS observations. PACS-based IR LFs are shown as dark/light shaded areas and dashed lines (see also Fig. 10). MIPS-based IR LFs are derived using MS-based 24 μm-to-L_IR conversion factors (black triangles) and above-MS-based 24 μm-to-L_IR conversion factors (red squares; see text for more details). The dotted lines show the local reference taken from Sanders et al. (2003). Blue triple-dot-dashed lines present results from Gruppioni et al. (2013). At low luminosities, the agreement between PACS-based and MIPS-based IR LFs confirms that PACS extrapolations towards lower infrared luminosities (i.e., light shaded areas) are reliable, at least down to the infrared luminosities probed by Spitzer.