Canon T 90 - Manual (Page 115)

3. H/S control
If your subject is either white or black, the
whiteness and the blackness cannot be
reproduced faithfully because of their unusu­
al reflectivity of light and the result will both
be "gray” The T90’s H/S control is advanta­
geous for the exposure compensation in
those cases
• “H” stands for “highlight” and is used when
the subject is white, while “S” stands for
“shadow” and is used when it is black,
• The H/S control can be used with both the
one-point spot metering and the multi-spot
metering. Here is how to use the H/S control
in the one-point spot metering explained in
consideration of its application.
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