\ ERTS 
MONOCHROME 
POSITIVES 
COLOUR 
PRINTS 
SUBJ. \ BAND 
CATEGORY^ 
4 
500—600 nm. 
5 
600—700 nm. 
6 
700—800 nm. 
7 
800—1100 nm. 
457 
COMBINED 
567 
COMBINED 
NON-VEGETATED 
WHITE OR 
WHITE OR 
MID-RANGE GREYS 
WHITE, 
WHITE, 
SURFACES. 
PALE GREY 
PALE GREY 
TO WHITE 
GREYS, 
PALE GREENS 
(SOIL,ROCKS, 
FAWN. 
PALE BLUES 
URBAN AREASI 
BROWN. 
VEGETATED 
MID-RANGE TO 
MID-RANGE TO 
MID-RANGE GREYS 
PALE PINK TO 
BLUES AND 
AREAS. 
DARK GREYS. 
DARK GREYS. 
TO WHITE. 
DEEP RED. 
GREENS. 
MODERATE 
TONE RANGE. 
SLIGHT INCREASE IN RANGE OF GREY 
TONES 
WATER. 
WATER 
TONES VERY DARK TO BLACK. 
BLACK. 
BLACK. 
^ 
^ ^ 
WATER WITH 
WHITE TO DARK GREY TONES 
USUALLY BLACK 
BLACK 
PALE BLUES. 
GOLD, 
SUSPENDED 
MAXIMUM 
LESS DETAIL 
SEDIMENT PLUMES 
NO SEDIMENT 
GOLDEN-BROWN. 
SEDIMENT. 
INFORMATION 
ON CURRENTS 
THAN 4. 
RARE. 
RECOGNISED 
SNOW, ICE. 
SURFACE WATER OR WET SNOW IN 
WHITE WITH 
GOLD,OCHRE 
PALE OR MIDDLE GREY TONES, SEEN AS 
PALE BLUE TINT 
TINTS REPRESENT 
PATTERNS AND TEXTURES ON ICE. 
FOR WATER OR 
WATER OR WET 
WHITE, NO TONE DISCRIMINATION. 
WET SNOW. 
SNOW. 
FIG 2. Range of Grey Tones and Colour with Broad Subject Categories 
560