Comparison of the 1–2.5 μm spectral-energy distribution of GJ 758 B to those of T8, T9 standard, benchmark companions, and to the red T8 dwarf WISEJ1617+1807 (Burgasser et al. 2011). The large blue circles represent our new IRDIS measurements, while the large pink squares represent the measurements from Janson et al. (2011). The horizontal lines correspond to the expected fluxes of the empirical objets in each filter bandpass.