Owner's Manual
11{1
Thank
you
for
plJrcha"sing
a Canon product.
The high-performance Canon Extender
EFt
.4X Ill and Extender EF2X Ill
increase the focal length of the attached EF tens
by
t .4X and 2X respectively.
&Safety
Pre.cautions
Do
not
look
at
the
sun
or
a
bright
light
source
through
the
lens
wi
th
the
extender
attached,
or
wi
th
a
camera
with
the
exterider
and
lens
aHached. Doing so could result in visual impairment. In particular, nev
er
look at the sun directly through the lens with the extender attached, because
that
Could result in loss of vision.
Do
not
leave
the
lens
with
the
extender
attached,
or
a camera
with
the
extender and
lens
attached In the
sun
without
the
lens
cap
on
. That may
result
in
concentrating the sun's rays, causing a fire.
Do not
leave the extender in excessive heat such as in a car in direct
sunlight.
High
temperatures
can
cause
the
extender
to
malfunction
.
Th
is
de
vice
co
mpli
es
wi
th
P
art
15
of
the FCC R
ules.
Operation
is
s
ub
jecl lo l
he
fo
ll
ow
i
ng
two
con
diti
ons:
(1)
This
d
evice
may
nol
cause
harmfu
l
int
erfe
re
nce
,
and
(2)
this
device
mus
t
acx:ept
any
int
erf
er
en
ce
receiv
ed
,
in
clu
ding
inlerfe
rence
that
may
cau
se
undes
ired
op
eration
.
Do
no
t
ma
ke
any
ch
an
g
es
or
mod
i
ficat
ions
to
the
eq
uip
m
en
t
unless
o
the
rwise
s
pe
cified
in
t
he
in
stru
ct
ions.
If
such
cha
nges
or
modi
fi
cati
o
ns
should.
be
ma
de
, y
ou
co
u
ld
be
req
uir
ed
to
sto
p
operatio
n
of
th
e
equi
pm
en
t
Th
is
e
qu
ip
ment
h
as
been
t
est
ed
a
nd
fo
u
nd
to co
mp
ly
wi
th t
he
lim
its
f
or
a d
ass
8 d
igi
tal
device,
pur
s
uant
to
pa
rt
15 of
the
F
CC
Rul
es.
Thes
e limi
ts
are d
es
igned
to
pr
ov
ide
re
as
onabl
e p
ro
tection
aga
in
st
ha
r
mful
int
erfere
nce
in a r
es
identia
l
in
stall
atio
n.
Th
is
e
qu
ip
ment
genera
te
s,
uses
and c
an
rad
ia
te
r
ad
io
fr
eque
ncy
en
er
gy
and
, if n
ot
i
nstalled
and
used
in
accordan
ce
wi
th t
he
in
structions
, m
ay
cau
se
harmfu
l
inte
rfe
r
ence
to
rad
io
commun
icat
i
ons
.
H
oweve
r,
th
e
re
is
no
gu
arant
ee
that
interfer
ence
wi
ll
not
occur
in
a
pa
rtic
ular i
nst
a
lla
lion.
If
th
is e
qu
ipment
does
cause
h
arm
fu
l
in
te
rf
eren
ce
to r
ad
io
or
tel
evisi
on
recept
i
on
, w
hic
h
can
be
de
te
r
mined
by t
urning
the
eq
uip
ment
off
and
o
n,
t
he
us
er
is
encouraged
to
t
ry
to
co
rrect the
in
te
rf
er
e
nce
by
one
or
more
of
th
e
following
measu
r
es
:
•
Re
orient or relocate
th
e receivi
ng
antenna.
•
Incre
a
se
th
e separation
be
tween
the
equipment
an
d
rece
i
ve
r.
•
Con
sult
the
de
aler or
an
ex
perie
nced
ra
dio/TV technician
for
he
lp.
This
Cla
ss
8 digital apparatus complies with Cana
di
an ICE$·003.
Usable lenses:
Fo
ca
l
length
& Maximum Aperture
Lens
EF1.4X Ill EF2X Ill
EF135mi11
f/2L USM
189mm f/2.8
270mm.fl4
EF180mm f/3.5L Macro
USM
252mm f/4.5
360mm f/6.7
EF200mm
f/2
.8L USM
280mm f/4 400mm f/5.6
EF200mm f/2.8L
II
USM
280mm f/4
400mm 1/5 .. 6
EF200mm f/1.
8L
USM
*
280mm
1/
2.5 400mm f/3.5
EF200mm f/2L IS USM 280mm
1/
2.8 400mm 1/4
EF300mm I/4L USM 420mm f/5.6
600mm 1/8
EF300mm f/4L
IS
USM 420mm f/5.6 600mm
1/8
EF300mm f/2.8L USM
*
420mm 114 600mm f/5.6
EF
300mm f/2.8L
IS
USM 420mm f/4
600mm f/5.6
EF400mm f/5.6L
USM
560mm f/8 800mm f/
11
EF400mm f/4
DO
IS
USM
560mm f/5.6 800mm
118
EF400mm f/2.8L
USM
*
560mm
1/
4 800mm f/5.6
EF400mm f/2.8L
II
USM
*
560mm t/4
BOOmm
f/5.6
EF400mm f/2.8L
IS
USM 560mm
114
800mm f/5.6
EF500mm f/4.
5L
USM
*
700mm f/6.7
1000mm t/9.5
EF500mm f/
4L
IS
USM 700mm f/5.6 1000mm f/8
EF600mm f/
4L
USM
*
840mm f/5.6 1200mm
1/8
EF600mm f/
4L
IS
USM 840mm f/5.6 1200mm f/8
EF800mm f/5.6L
IS
USM
l120mm
t/8 1600mm f/
11
EF1
00-400mm f/4.5·5.
6L
IS
USM
140-560mm f/6.7-8
200-800mm f/9.
5·11
EF70-20Qmm
f/4L USM 98-280mm f/5.6 140-400mm f/8
EF70·200mm f/4L
IS
USM 98-280mm f/5.6 140·400mm f/8
EF70·200mm f/2.8L USM 98·280mm t/4 140·400mm f/5.6
EF70-200mm f/2.
8L
IS
OSM
'98-280mm f/4· 140-400mm t/5.6
EF70·200mm f/2.
8L
IS
If
USM
98·280mm
f/4 140-400mm 1/5.6
EF300mm f/2.8L
IS
II
USM 420mm f/4 600mm
1/5
.6
EF400mm f/2.8L
IS
If
USM 560mm f/4 800mm
1/5
.6
EF500mm f/4L
IS
II USM 700mm f/5.6 1000mm
1/
8
EF600mm f/4L
IS
If
USM 840mm t/5.6 1200mm f/8
EF1200mm f/5.6L
USM
*
1680mm
fiB
2400mm f/
11
*: Ustng an Extender wtth thts lens may
result'"
tncorrect autofocus.
If
your
camera has
an
AF
mtcroadjustment
functiOr1;.
do
the
AF
microadju
s
tment.
If your camera does not have an AF micrciaQjustment function, focus
manually
if
the AF precision is way off.
• For details on AF microadjustments,
See
the camera's instruction manual.
•
Refer
~o
the camera and lens instrUction booklets to see if there are any AF
compatibility limnatlons.
• The maximum aperture·is indicated in half-stop increments.
Mounting and dismounting the Extender
First attach the Extender to the len
s,
then attach it to the camera.
To
detach i
t,
~!~~~~:h
~~~~::~~~~~!
~~e~~S:~.
·
tl
l
de
fh
$1.;;
r~H:Si
.
re~
Ss
Shown by
the arrow,
then
tUm
the Extender counterclockwise. ·
Maximum Aperture with the Extender
When Extender
EFt
.4X Ill is attached, the lens maximum aperture will be smaller
(darker) by 1 stop. With Extender EF2X Ill, the maximum aperturewill
be
smaller
by 2 stops. In a
ny
case, the camera will compensate the expcsure
a~matically
,
Caution
Do
not attach two or more Extenders on the same camera. Doing
So
will
degrade
the optical
performance
and
the
camera
will
not
be
able
to
obtain
proper exposure readings. ·
To enhance water and dust resistance, the Extender EF1.4X
111811d
EF2X Ill have
·a rubber ring around the mount.
As
the lens is repeatedly mourmiif and detached,
the
rubber
ring
will leave
fine
abrasion
marks
on
the
outside
of
the
camera
mount.
·
This will not affect operation.
The rubber ring can be replaced
by
a Canon service center
(a
fee
will
be
charged).
Autofocusing slows down when the lens is used with
an
extender, in order to
main~n
~
P!ec
_
isi~n
of
a~tof~us
control. " ,
.,_
~..;
,;.;
.
._
.
The
Extenders
·· be used
w~h
film cameras
olh&l'
illt!J
the EOS,
tV.
Using
an
Extender witlr a fllm camera other than
th~
EOS-1 V may qause misoperation.
Major Specifications
Mount
: Canon
EF
mount (Electronically Controlled)
Lens
construction:
EFt
.4X Ill: 7 elements in 3.
groups
EF2X Ill: 9 elements in 5 groups
Dimensions
(Max.
die.
x
length)
: EF1.4X Ill: 72.0 dia. x 27.2 mm / 2.8 x 1.1 inch
EF2X Ill: 72.0 dia. x 52.7
mm
/ 2.8 x
2.1
inch
Weight
:
EFt.4X
Ill: approx. 225 g
/7.
9 oz, EF2X Ill: approx. 325 g I t
t.5
oz
Case
:
EFt
.4X III/EF2X Ill:
LP81t
.•
All
specifications are based on Canon's tests and measurements.
• Product specifications and appearance are subfect to change without notice.