Canon Model 7S User Manual
Page 22
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1 250, 1 500, and 1 1000 of a seconds as well as
“B” (bulb) and "T” (time) exposures and "X".
The “B” exposure is used for exposures of over
1 second. The shutter stays open as long as
the shutter button is kept depressed.
The
"T”
exposure
is
used
for
long
exposure.
When the shutter button is pressed, it will remain
depressed,
even
after
your
finger
is
removed,
leaving the shutter open. By turning the shutter
speed dial slightly in either “B” or "X” direction,
the
shutter
button
snaps
back
into
its
former
position and the shutter closes.
The
“X”
scale
reading
is
used
for
speedlight
synchronization. The shutter speed is 1 '60 of a
second. However, the effective time of the ex
posure in this case depends on the peak perform
ance of the speedlight used.
•
• Do not set the shutter speed dial between
two
figures.
It
must
be
set
exactly
on
a
“click” stop.