In the TTL mode, test -firing must be performed by trip-
ping
the
shutter.
Note that
,
without
film
loaded in the
camera
,
the
ready-light
will blink
even
if the
correct
exposure is obtainable
.
As
a substitute
for loaded roll
film
,
you
can
use
a strip
of cut film
(provided it is
not too
old) or
a
piece
of
gray
paper.
43