Unmounted
lenses
wh
ich have
not
been put
back
into
their
cases should be handled care-
fully. They should be placed on a level surface
to
keep
them
from
falling over
or
rolling
away
and damaging
the
optical system.
Generally, smaller lenses should be
stood
on
end
with
the
rear
mount
capped and facing
upwards
as
with
the
three lenses in
the
center
of
the
photo.
Conversely,
the
SMC
Fish-Eye
Takumar
35mm
lens should stand on its rear
lens cap
to
avoid scratching its
proturding
front
element. Long telephoto lenses
with
12
tripod
mounts should be placed lengthwise on
their
side ; these will
topple
if
stood upright.
Out-
of-focus
, blurred
photographs
are almost
always caused
by
camera shake
which
results
from
not
holding
the
camera
firmly
enough.
This tendency is
more
pronounced at
slow
shutter speeds and
with
long
67
telephotos,
in particular" due
to
their
greater length and
forward
center
of
gravity
. Greater care
is
needed
with
these lenses
to
aviod camera
shake.
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