Canon lens EF 1124mm f4L USM User Manual

EF11-24mm f/4L USM
Instructions
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Thank you for purchasing a Canon product.
Canon’s EF11-24mm f/4L USM is a high-
performance ultra-wide angle zoom lens, for use 
with EOS cameras.
 ●“USM” stands for Ultrasonic Motor.
Features
1. Use of super UD lens elements, UD lens 
elements, 
and two types of aspherical lens 
elements giving superior definition.
2.
 SWC (Subwavele

ngth Structure Coating) 
and ASC (Air Sphere Coating) are utilized to 
significantly reduce occurrences of flare and 
ghost created by quite large incident angles of...

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 Safety Precautions
 Safety Precautions
 ●Do not look at the sun or a bright light source 
through 
the lens or camera.  Doing so could result in 
loss of vision. Looking at the sun directly through the 
lens is especially hazardous. 
 ● 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 could cause a fire.
 ● The EF1

1-24mm f/4L USM features a large diameter...

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Precautions for Shooting
 ●If dirt or dust adheres to the surface of the front lens element, it can easily appear in images due to the 
l
ens’s short focal length. In order to avoid this, please remove dirt or dust from the surface of the front lens 
element by using a commercially available air dust blower.
 ● Si

nce this lens has a wide angle of view, light from bright light sources, such as the sun, can easily enter 
the image area. Please do not look at bright light sources using the camera’s...

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This device complies with Part 15 of the FCC Rules. 
Operation is subject to the following two conditions: (1) This 
device may not cause harmful interference, and (2) this 
device must accept any interference received, including 
interference that may cause undesired operation.
Do not make any changes or modifications to the equipment 
unless otherwise specified in the instructions. If such 
changes or modifications should be made, you could be 
required to stop operation of the equipment.
This...

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Nomenclature
 ● For detailed information, reference page numbers are provided in parentheses (→  **).
Focus mode switch (→ 7)
Distance scale (→ 8)Zoom ring (→ 7)
Rubber ring (→ 6)
Gelatin filter holder (→ 9)
Contacts (→ 6)
Lens mount index (→ 6)
Focusing ring (→ 7)Built-in lens hood
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1. Mounting and Detaching the Lens
See your camera’s instructions for details on 
mounting and detaching the lens.The lens mount has a rubber ring for enhanced dust- and water-resistance. The rubber ring may 
cause slight abrasions around the camera’s lens 
mount, but this will not cause any problems. If the 
rubber ring becomes worn, it is replaceable by a 
Canon Service Center at cost.
 ● After detaching the lens, place the lens with 
the  rear end up to prevent the lens surface and 
contacts...

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2. Setting the Focus Mode3.  Zooming
After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway 
and turning the focusing ring. (Full-time manual 
focus)
To shoot in autofocus (AF) mode, set the focus 
mode switch to AF.
To shoot in manual focus (MF) mode, set the 
focus mode switch to MF, and focus by turning 
the focusing ring. 
The focusing ring always works, regardless of 
the focus mode. To zoom, rotate the zoom ring.
Also, the minimum focusing distance of...

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4. InfinityCompensation
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, 
there is a margin at the infinity (∞) position.
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...

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6. Lens Cap
The lens cap can be attached by pinching the 
lock knobs and vertically aligning the lens cap 
with the lens hood as shown in the diagram.There is a gelatin filter holder at the rear of the 
lens. Cut the gelatin filter to fit within the white 
frames. Then insert the gelatin filter into the filter 
holder.
7. Filter (Sold separately)
The recessed sections of the lens hood that the 
cap locks on to are located at the front inside edge 
of the top and bottom petals.
Lock knobs
The lens’s...