Wherein the vignetted light sensors comprising {TAIL ~ a vignette depth} resulting from the difference in height between {HEAD ~ the tall structures} and short light sensing structures, and 
Wherein the vignetted light sensors comprising { TAIL ~ a vignette depth } resulting from the difference in height between { HEAD ~ the tall structures } and short light sensing structures , and
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH