WhattheCameraSees:TheVisualElementsRecordingColor
Colormightseemtobethemostimme-diatelyevidentofallthecomponentsofseeing:Who,excepttheblindandthecolor-blind,doesnotseethegreenofleaves,theredofvalentinesortheever-changingtintsoftheocean?Butthefactisthatcolorsarecarelessly
perceivedagreatdealofthetime,be-causepeoplegenerallyseethe colors
thattheyexpecttosee.Anobjectthat
isusuallypinkisonlymoreorlesspink—
or
notpink
atall—under
atree,whereitmayassumeagreenishcast;
intheblueglowofafluorescentlight;orplacednexttoa yellowwall,whereit
picksupareflectionofthewallscolor.Acamera,whichlaborsundernopre-
conceptions,mayrecordallsuchsub-
tlecolorchanges.
TakeMilito'srock,forinstance Itwaspickeduponanislandoffthecoast
ofRhodeIsland;mostsuchrocks,worn
bytheglacialice that
depositedthem
andbymillenniaoffriction,appearto
becolorlessatfirstglance—mostly
white,orperhapsalittleyellowish.But
thetexturedclose-up
at
leftand
thehighlightedpictureoppositerevealthat
therock'svisualassetsincludestriking
rust-red
flecksandstainsonitssubtle
beigebackground.Itisnot,then,tobe
regarded
solelyasanobjectofshape,
textureandform;itexhibitsanotheras-
pectofvisionthatis
detectablebythe
seeingeye:color.
J.'* 'L
''6'.TLemMuSr.m
/
'*
A'*s
VBHH
7bseewhatadifferencecolorcanmakeintheperceptionofanobject,comparethephotographabovewiththeblack-and-white
close-upoftherock'stextureonpages24-25.Inthepictureoppositethecolorviewbringsout arichnessoftonethatsetsthisrockapart
asaunique
object.