Pentax ist - Manual (Page 92)

90
Using Spot Metering
This mode measures light only in the small area in the center of
the viewfinder. You can use AE lock (see page 86) to lock the
spot metering exposure and recompose to take the picture.
✍
MEMO
• With spot metering, the exposure is weighted on the small area at the
center, as shown in the illustration.
1
Set the metering mode
switch to
.
SWITCHING THE METERING MODE
Spot metering zone