Peak [O III] 5007 Å luminosity (﹩{L}_{[{\rm{O}}\,{\rm\small{III}}]}^{\mathrm{peak}}﹩) produced by a standard solar metallicity PNe simulated with CLOUDY. The stellar luminosity L _⋆,3 in the legend is in units of 10³ L _⊙. The left panel assumes an ejecta mass of m _ej = 0.1M _⊙ and an effective stellar temperature T _eff = 10⁵ K, and varies the dust-to-gas mass ratio and central stellar luminosity. The orange-shaded region reflects the observed PNLF bright-end cutoff at M ₅₀₀₇ = −4.53 ± 0.06 translated to line luminosity from Ciardullo (2012). The right panel plots ﹩{L}_{[{\rm{O}}\,{\rm\small{III}}]}^{\mathrm{peak}}﹩ as its ratio to the center stellar luminosity L _⋆. Here we assume a central stellar luminosity of 15,000L _⊙ and an effective stellar temperature T _eff = 10⁵ K, and vary the ejecta mass and the dust-to-gas mass ratio.