Canon lens EF 2470mm f4L IS USM User Manual

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●●The magnification of this lens is determined by 
the combination of the following three factors: 
the focusing ring position, zoom ring position, 
and focusing distance. Therefore, the number 
of combinations for achieving a certain level 
of magnification is countless. The method for 
close-up shooting described here involves trying 
as much as possible to keep the focus position 
within the range indicated by the yellow line on 
the distance scale. However, please keep in 
mind that this is just one method of many.
●● To check depth of field, please use the camera’s 
depth of field function.
●● For information on taking hand-held close-ups, 
please refer to page 15.●●Please focus carefully since the depth of field 
with close-ups is shallow. 
●● The focusing ring distance scale is designed to 
display distances during normal shooting. As a 
result, it does not display distances during close-
up shooting.
●● When the zoom ring is set to the macro range, 
there are cameras that will record the focal 
length information into the image at a value 
between the range from above 70 mm to 80 mm 
due to system issues.* However, the actually 
focal length will never exceed 70 mm.
Close-up Shooting
* Depending on cameras.
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7. Exposure during Close-up Shooting
●●The correct exposure for a close-up shot largely 
depends on the subject. Therefore, try to bracket 
the exposure for the same subject.
●● Using aperture-priority AE (Av) or Manual (M) 
picture-taking modes are recommended for 
macro photography as it is easy to adjust depth 
of field and exposure in these modes.
Setting the Exposure
When taking photographs using TTL metering, 
no exposure compensation is necessary to 
meter the light coming through the lens.  
With TTL metering, AE (autoexposure) is 
possible at all focusing distances. Just set the 
desired picture-taking mode, then check the 
shutter speed and aperture before taking the 
picture.
Magnification and Effective 
f-number
The aperture displayed by the camera assumes 
that the focus is set to infinity. The actual 
aperture (effective f-number) becomes darker 
(effective f-number increases) at closer focusing 
distances (magnification increases). This does 
not cause exposure problems for normal picture-
taking. However, for closeup photography, 
you cannot ignore the change in the effective 
f-number. When you use a handheld exposure meter to 
set the exposure, you must take into account the 
exposure factor shown in the following table.
Magnification 1 : 5 1 : 3 1 : 2 1 : 1.5
Effective f/No. 4.71 5.06 5.66 5.66
Exposure Factor 
(stops)*
+1/3 +2/3 +1 +1
+1/2 +1/2 +1 +1
* Upper values: 1/3 stops. Lower values: 1/2 stops.
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8.  Infinity Compensation 
Mark
For accurate manual focusing of subjects at infinity, 
look through the viewfinder or look at the magnified 
image* on the LCD screen while rotating the 
focusing ring.
To compensate for shifting of the infinity focus 
point that results from changes in temperature. 
The infinity position at normal temperature is the 
point at which the vertical line of the distance 
scale L mark is aligned with the distance index.
Distance indexInfinity compensation mark
* For cameras with Live View shooting capability.
9. Infrared Index
●●
The infrared index position is based on a 
wavelength of 800 nm.
●● The compensation amount differs depending on 
the focal length. Use the indicated focal length 
as a guide when setting the compensation 
amount.
●● Be sure to observe the manufacturer’s 
instructions when using infrared film.
●● Use a red filter when you take the picture.
Some EOS cameras cannot use infrared film. See 
the instructions for your EOS camera.
The infrared index corrects the focus setting 
when using monochrome infrared film. Focus on 
the subject manually, then adjust the distance 
setting by moving the focusing ring to the 
corresponding infrared index mark.
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10. Image Stabilizer
You can use the image stabilizer in AF or MF mode.This function provides optimal image stabilization depending on 
shooting conditions (such as shooting still subjects, following 
shots, and close-up shooting).
OFF
ON
The image stabilizer in this lens is 
effective for hand-held shots under the 
following conditions.
●●Close-up shooting.
●● In semi-darkened areas such as 
indoors or outdoors at night.
●● In locations where flash 
photography is prohibited, such as 
art museums and theater stages.
●● In situations where your footing is 
uncertain.
●● When panning subjects in motion.
●● In situations where fast shutter 
settings cannot be used. 
2 When you press the 
shutter button halfway, the 
Image Stabilizer will start 
operating.
●●Make sure the image in the 
viewfinder is stable, then 
press the shutter button the 
rest of the way down to take 
the picture.
1 Set the STABILIZER 
switch 
to ON.
●●The Hybrid IS is activated 
during close-up shooting (see 
page 8) which provides highly 
effective image stabilization.
●● If you are not going to use the 
image stabilizer function, set 
the switch to OFF. 
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●●When shooting a still subject, it compensates for 
camera shake in all directions.
●● It compensates for vertical camera shake during 
following shots in a horizontal direction, and 
compensates for horizontal camera shake during 
following shots in a vertical direction.
●● When you use a tripod, the Image Stabilizer 
should be turned off to save battery power.
●● The stabilizer is equally effective for hand-
held photography and photography with a 
monopod. The Image Stabilizer effect may be 
reduced, however, depending on the shooting 
environment.
●● The image stabilizer function also operates when 
the lens is used with an Extension Tube EF12 ll 
or EF25 ll.
●● Pictures may look distorted after being taken 
depending on the camera, but this doesn’t affect 
shooting.
●● If you set the camera’s Custom Function to 
change the assigned button to operate the AF, 
the Image Stabilizer will operate when you press 
the newly assigned AF button.●●The shorter the subject distance from the 
camera, the lesser the Image Stabilizer effect 
will be.
●● The Image Stabilizer cannot compensate for a 
blurred shot caused by a subject that moved.
●● Set the STABILIZER switch to OFF when you 
are taking pictures using the Bulb setting (long 
exposures). If the STABILIZER switch is set to 
ON, the image stabilizer function may introduce 
errors.
●● The Image Stabilizer may not be fully effective 
if you shoot from a violently shaking vehicle or 
other transportation.
●● The Image Stabilizer consumes more power than 
normal shooting, so fewer shots can be taken if 
you use the function.
●● The image stabilizer operates for about two 
seconds even when your finger is off the 
shutter button. Do not remove the lens while 
the stabilizer is in operation. This will cause a 
malfunction.
●● With the EOS-1V/HS, 3, ELAN 7E/ELAN 
7/30/33, ELAN 7NE/ELAN 7N/30V/33V, ELAN 
II/ELAN IIE/50/50E, REBEL 2000/300, IX, and 
D30, the Image Stabilizer will not work during 
self-timer operation.
Image Stabilizer
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The magnification refers to the ratio between the 
subject’s size and the corresponding image size on 
the focal plane.
11.  Image Stabilization during Close-up Shooting
For normal close-up shooting, the higher the 
magnification, the faster the shutter speed must 
be to prevent blur caused by camera shake. 
Although it depends on the shooting conditions, 
usually the shutter speed must be at least one 
or two stops faster than normal. 
The EF24-70mm f/4L IS USM is installed with 
an Image Stabilizer that gives the equivalent 
effect of a shutter speed approximately 3 steps 
faster when shooting at a magnification of 
0.5x, and approximately 2.5 steps faster when 
shooting at 0.7x.*
* Depending on shooting conditions.
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12.  Taking Hand-held Close-ups
Close-up shots are more prone to be affected by 
camera shake than with normal shooting. The 
Image Stabilizer’s corrective effect is therefore 
less during close-ups than during normal 
shooting even with the same degree of camera 
shake.
The depth of field also becomes very shallow 
with close-ups, and moving forward or back 
even slightly will throw off the focus.
When hand-holding the camera for close-up 
shooting, minimize camera shake and blurred 
focus with the following techniques:
Hold the camera firmly
As shown on the right, hold the camera firmly so 
it does not move while shooting.
Use AI Servo AF
For close-up shots, set the camera’s AF mode to 
AI Servo AF. Using autofocus is recommended.
The AI Servo AF mode can minimize blurred 
focus during close-up shooting.
For details, see the camera’s instruction manual.
Place both elbows on a steady surface such as a table.Use your knee to support 
an arm holding the 
camera. Lean against a steady 
object like a wall.
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13. Hood
●Attaching
To attach the hood, align the hood’s attachment 
position mark with the red dot on the front of the 
lens, then turn the hood as shown by the arrow 
until the lens’ red dot is aligned with the hood’s 
stop position mark.●Removing
To remove the hood, hold down the button on 
the side and turn the hood in the direction of the 
arrow until the position mark on the hood aligns 
with the red dot. The hood can be reverse-
mounted on the lens for storage.
●●
If the hood is not attached properly, vignetting (darkening of the perimeter of the picture) may occur. 
●● When attaching or detaching the hood, grasp the base of the hood to turn it. To prevent deformation, do not 
grasp the rim of the hood to turn it.
The EW-83L hood cuts out unwanted light and protects the front of the lens from rain, snow, and 
dust. 
Button
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16.  Extension Tubes 
(Sold separately)14.  Filters 
(Sold separately)
You can attach extension tube EF12 II or EF25 
II for magnified shots. The shooting distance 
and magnification are shown below.
An extension tube cannot be used when the zoom 
ring is set to macro.
MF mode is recommended for accurate focusing.
Focusing Distance Range (mm)Magnification (×)Close distance Long distance Close distance Long distance
EF12 II 24mm163 174 0.63 0.5070mm258 523 0.44 0.18
EF25 II24mm
Incompatible
70mm226 332 0.72 0.4
You can attach filters to the filter mounting 
thread on the front of the lens.
●● If you need a polarizing filter, use the Canon 
Circular Polarizing Filter PL-C B (77 mm).
●● To adjust the polarizing filter, first remove the 
lens hood.
15.  Close-up Lenses 
(Sold 
separately)
Attaching a 500D (77mm) Close-up Lens 
enables close-up photography.
Magnification will be 0.05x – 0.29x.
Magnification will be 0.16x – 0.74x within the 
macro range.
●●Close-up Lens 250D cannot be attached 
because there is no size that fits the lens.
●● MF mode is recommended for accurate focusing.
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Specifications
●●The lens length is measured from the mount surface to the front end of the lens. Add 24.2 mm 
when including the lens cap and dust cap.
●● The size and weight listed are for the lens only, except as indicated.
●● Extenders cannot be used with this lens.
●● Aperture settings are specified on the camera.
●● All data listed is measured according to Canon standards.
●● Product specifications and appearance are subject to change without notice.
Focal Length/Aperture 24-70mm f/4
Lens Construction 12 groups, 15 elements
Minimum Aperture f/22
Angle of View Diagonal: 84° – 34°, Vertical: 53° – 19° 30′, Horizontal: 74° – 29°
Min. Focusing Distance
0.38 m/1.25 ft. (0.2 m/0.66 ft. in the macro range; working distance of approx. 3 cm/1.18 in.)
Max. Magnification 0.21x (at 70mm); 0.7x in the macro range 
Field of View
Approx. 287 x 439 – 115 x 172.5 mm/
11.30 x 17.28 – 4.53 x 6.79 inch (at 0.38 m/1.25 ft.)
Filter Diameter 77 mm/3.03 inch
Max. Diameter and Length 83.4 x 93 mm/3.28 x 3.66 inch
Weight Approx. 600 g/21.2 oz
Hood EW-83L
Lens Cap E-77 II
Case LP1219
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