Column 1 shows the dark ﬂash
shot (F) and long exposure reference (L). Our results are shown in Columns 2,3 & 4. For each ambient image (A) of decreasing exposure
(yielding increased noise), we show the reconstructed output (R). Column 5 shows a visible ﬂash image (V), along with a visible ﬂash shot
(D) attenuated with neutral density ﬁlters so that it is comparably dazzling to F. The Low, Medium and High noise levels correspond to 6, 7
and 8 stops of underexposure respectively (corresponding to 1/64th, 1/128th and 1/256th of ambient long exposure).