Figure 1. Average cone image for all sequences, used as master image for cone labeling.

Imaged area is ∼1° inferior to fixation, and is within the foveal avascular zone. Labeled cone centres are marked in blue (n = 510). The average of corresponding frames in all sequences is presented as a pseudo-sequence in Media S1, which is cropped so that only pixels that were illuminated in every sequence are shown. The limited vertical extent of the field facilitates high frame rate acquisition with the sCMOS hardware.