Kodak vest pocket B - Lens Cleaning and Maintenance; Clean Lenses for Image Quality

Clean Lenses
Dirty
or
dusty lenses make
poor
tures. The
picture
below
and the
on
page
43
illustrate
this
clearlv.
gray,
-flat,
indistinct
picture
beiow
through
the lens from
the
back
and if
it
is
dirty,
wipe
it front
and
back,
with
a
elean
handkerchief.
Made
with
Clean
Lens.
Large
spots
of dust
or
dirt
on
the
lens
will
eause
defects
in
the
picture,
while if
the
lens is
evenly
eovered
with dust,
dirt
or
moisture,
the
effeet
will
be to
cut
off a
great
deal of
light
and
make
the
pictuie
gray
and
flatl,
plc-
one
The
was
Made
with
Dirty
Lens.
made
with
a dirty lens,
the surfaces
of
which were
covered
with
dust,
The
sharp,
elear
and
distinct
picture
on
page
43,
was
made
with
the same lens
after
it had been
earefully
cleaned.
Lenses should
be
frequently
ex-
amined.
Remove the
front
of the
Kodak as
described, and
shown
in
Figs.
I and
II,
on
pages
5 and
6
(when
there
is no film in it),
then open
the front
as
in Fig. I,
page
10.
Adjust
the
shutter
for
a
Time
Exposure
and
open
it;
the
largest stop opening,
No. 1, should
be
in
position.
Ilold
the eamera
with the
front
towards the light,
then
look
42
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