Canon IMAGE STABILIZER ULTRASONIC EF300MM f/4L IS... User manual

EF300mm F4L IS USM
Instruction

ENG-1
Thank you for purchasing a Canon product.
Developed for Canon EOS cameras, the Canon EF 300mm f/4L IS Ultrasonic lens is an
interchangeable SLR lens equipped with a dual-mode Image Stabilizer (IS). The Image Stabilizer
reduces blur caused by camera shake approximately two full shutter speeds compared to normal
handheld shooting.
Features
1. The Image Stabilizer operates by moving optical elements inside the lens. Features include:
•Aspecial mode provided to obtain steadier viewfinder images during panning etc.
•Aswitch turns the Image Stabilizer circuit on and off.
2. Two UD-glass elements suppress chromatic aberrations for sharp, high-contrast images expected of
an L-series lens.
3. Ultrasonic Motor (USM) for quiet autofocusing.
4. Wide focusing ring makes manual focusing easy.
5. Minimum focusing distance of 1.5 m / 4.9 ft.
6. Compatible with Extender EF 1.4×ll and EF 2×ll.
7. The Image Stabilizer can be used while an Extender is attached (except with certain EOS cameras).
:Warning to prevent malfunction or a flawed photo. : Helpful tips.

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a Safety Precautions
(1) Whether it is attached to the camera or not, do not leave the lens under the sun without the
lens cap attached.
This is to prevent the lens from concentrating the sun’s rays which can cause a fire.
(2) Do not look at the sun or a bright light source through the lens or camera.
Doing so can result in loss of vision. Looking at the sun through the detached lens is especially
hazardous.

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Nomenclature
STABILIZER MODE
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STABILIZER
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AF
MF
•1.5m –
•3m –
Built-in hood
Focusing ring
Image Stabilizer switch
Image Stabilizer mode switch
Focus mode switch
Lens mount index
Distance range limiter switch
Contacts
Distance scale window
Tripod collar mount
Tripod collar index

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•After detaching the lens,
attach the dust cap to the rear
of the lens to protect the
electrical contacts and lens
surface from scratching.
•If the contacts are dirty,
scratched, or soiled with
fingerprints, etc., corrosion or
a faulty connection or
operation may result.
•If the lens surface is dirty, the
lens may not autofocus
properly.
■Attaching the lens to
the camera
Remove the lens dust cap
by turning it
counterclockwise.
Align the lens mount index
with the red dot on the
camera. Then turn the lens
clockwise until it locks in
place.
Remove the lens cap by
pressing both clasps.
■Detaching the lens
Hold down the lens release
button on the camera and turn
the lens counterclockwise until
it detaches.
1. Attaching and
Detaching the Lens
1
2
3
AF
MF
STABILIZER MODE
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STABILIZER
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CANON
STABILIZER MODE
STABILIZER

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To enable autofocus, set the
focus mode switch to AF. To
focus manually, set the focus
mode switch to MF and turn the
focusing ring.
One of two focusing distance
ranges can be set with the
focusing limiter switch: 1.5 m -
infinity or 3 m - infinity.
2. Setting the Focus
Mode
3. Switching the
Focusing Distance
Range
•Before switching the focusing
distance range from 1.5 m -
infinity to 3 m - infinity, first
turn the focusing ring so that
the distance scale index is
within 3 m - infinity.
•If the distance scale index is
within 1.5 - 3 m and the
focusing limiter switch is set
to 3 m - infinity, initial
autofocusing may cause the
lens to first stop at 3 m on the
distance scale. This is not a
malfunction. If this occurs,
press the shutter button again
to resume normal
autofocusing.
AF
MF
m
–
–
•1.5m –
•3m –

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Full-time manual focusing
enables you to focus manually
even in the autofocus mode.
Set the camera to One-Shot
AF. After focus is achieved,
hold down the shutter button
halfway and turn the focusing
ring to focus manually.
5. Full-time Manual
Focusing
4. Macro Mechanism
This lens is equipped with a
macro mechanism for low
magnification close-up
photography. Autofocus
function is also possible in the
macro range as in normal
shooting.
If a picture with maximum
magnification and minimum
field of view coverage is
required in the macro range, set
the AF mode to manual, turn
the manual focusing ring to the
minimum focusing distance in
the macro range. Then while
looking through the viewfinder,
move the camera (or your body)
back and forth slowly until the
image becomes clear. For the
actual maximum magnification
and minimum field of view
15 30
510 ft
m
values, please refer to the
specifications.

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3) Using flash is undesirable.
Attachments
None
With EF 1.4×ll
With EF 2×ll
Shutter Speed
1/30 - 1/125 sec.
1/40 - 1/200 sec.
1/60 - 1/250 sec.
The Image Stabilizer is
effective with the following
shutter speeds:
■ Image Stabilizer Mode 2
Use this mode when panning a
shot. It helps to steady the
image in the viewfinder.
Turn on (｜) the Image
Stabilizer switch.
Set the Image Stabilizer
Mode switch to 1 or 2. (For
normal use, set to 1.)
6. Using the Image
Stabilizer
1
2
Press the shutter button
halfway to activate the
Image Stabilizer.
■ Image Stabilizer Mode 1
Image Stabilizer Mode 1 is
especially effective in the
following situations:
1) The subject is still.
2) The scene is dark such as at
sunset or indoors.
3
STABILIZER MODE
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STABILIZER
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•If the camera’s Custom Function is used to alter the AF activation method, the Image Stabilizer will be activated
by the altered method.
•Before shooting, look through the viewfinder and check that the image has been stabilized.
•The Image Stabilizer operates normally even with Extender EF 1.4×ll attached.
•With Extender EF2×II attached to the lens, the Image Stabilizer will work with the following cameras:
EOS-1Ds Mark II, EOS-1Ds, EOS-1D Mark II N, EOS-1D Mark II, EOS-1D, EOS 5D, EOS 30D, 20D, 20Da, 10D,
DIGITAL REBEL XTi/400D DIGITAL, DIGITAL REBEL XT/350D DIGITAL, DIGITAL REBEL/300D DIGITAL,
D60, D30, EOS DCS1, DCS3, D2000, D6000, EOS-1V/HS, EOS-1N/DP/HS/RS, 3, ELAN 7E/ELAN 7/30/33,
ELAN 7NE/ELAN 7N/30V/33V, ELAN II/ELAN IIE/50/50E, REBEL X/REBEL XS/500, REBEL G/500N, REBEL
2000/300, REBEL Ti/300V, REBEL T2/300X, REBEL K2/3000V, IX, IX Lite/IX7, 3000/88, 5000/888
Notes for Image Stabilizer Mode 1
•The Image Stabilizer may not be effective in the following cases:
1During camera movement such as panning.
2During picture-taking on a moving boat, car, etc.
Note for Image Stabilizer Mode 2
•Use this mode only for panned shots, etc. Normally, use Image Stabilizer Mode 1.

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•Do not turn on (｜) the Image Stabilizer switch when using the camera on a tripod. Doing so may cause Image
Stabilizer misoperation. Turn off the Image Stabilizer before using the camera on a tripod.
•For bulb exposures, turn off (○) the Image Stabilizer switch to prevent misoperation.
•With the EOS-1V/HS, 3, ELAN 7E/ELAN 7/30/33, ELAN 7NE/ELAN 7N/30V/33V, ELAN II/ELAN II E/50/50E,
REBEL2000/300, IX, and D30, the Image Stabilizer will not work during self-timer operation.
•If the tripod collar covers the Image Stabilizer switch or Image Stabilizer Mode switch, the switch will be
inaccessible. Loosen the tripod collar lock nut and turn the camera to expose the switches.