Canon T 90 - Manual (Page 168)

Data Memory Back 90
The Data Memory Back 90 is an interchange­
able camera back designed for exclusive
use with the T90, and can memorize up to 16
types of exposure control data automatically
The Data Memory Back 90 has two modes;
the standard mode for storing all 16 types of
data and the reduced mode for storing the 6
types of data.
Primary data stored can be checked on the
Data Memory Back's LCD monitor panel. In
addition, like the Command Back 90, the
Data Memory Back 90 can also imprint
several data automatically.
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