Canon EF 70 User Manual

EF70-300mm f/4-5.6L IS USM

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Instruction

Thank you for purchasing a Canon product.

Dedicated to EOS cameras, the Canon EF70-			4. Ultrasonic motor (USM) for quick and quiet
300mm f/4-5.6L IS USM lens is a high-				autofocusing.
performance telephoto zoom lens equipped			5. Manual focusing is available after the subject
with an Image Stabilizer.				comes into focus in autofocus mode (ONE
• “IS” stands for Image Stabilizer.				SHOT AF).
			6. The zoom ring can be fixed to keep the lens at
• “USM” stands for Ultrasonic Motor.
				the shortest point.
Features			7. A truly round aperture hole results in a nicer
				background blur.
1. The Image Stabilizer gives the equivalent			8. Tight seal structure ensures excellent dust-
effect of a shutter speed four stops faster*.				proof and drip-proof performance.
The lens also has a second image stabilizer			* Based on [1/focal length] second. Generally, it requires
mode that is optimized for following shots of			a shutter speed [1/focal length] second or faster to
moving subjects.	COPY
			prevent camera shake.
2. UD lens elements for excellent imaging
performance.
			Conventions used in this instruction
3. A fluorine coating has been applied to the
							Warning to prevent lens or camera malfunction
lens’s front and rear lens elements which
allows dust to be wiped from the outside of the							or damage.
lens more easily compared with previous							Supplementary notes on using the lens and
lenses.							taking pictures.

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This Class B digital apparatus complies with Canadian ICES-003.

Handling Cautions

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not

Do not look at the sun or a bright light source cause harmful interference, and (2) this device must accept any

through the lens or camera. Doing so could result interference received, including interference that may cause

in loss of vision. Looking at the sun directly through undesired operation.

Do not make any changes or modifications to the equipment

the lens is especially hazardous.

unless otherwise specified in the instructions. If such changes or Do not point the lens or camera at the sun or modifications should be made, you could be required to stop

photograph it. This is because the lens operation of the equipment.

concentrates the sun’s rays even when the sun is This equipment has been tested and found to comply with the outside the image area or when shooting with limits for a class B digital device, pursuant to part 15 of the FCC

backlight, which could cause malfunction or fire. Rules. These limits are designed to provide reasonable protection

Whether it is attached to the camera or COPYnot, do not against harmful interference in a residential installation. This

leave the lens under the sun without the lens cap equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the

attached. This is to prevent the lens from instructions, may cause harmful interference to radio concentrating the sun’s rays, which could cause a fire. communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be If the lens is taken from a cold environment into determined by turning the equipment off and on, the user is

a warm one, condensation may develop on the encouraged to try to correct the interference by one or more of lens surface and internal parts. To prevent the following measures:

condensation in this case, first put the lens into an • Reorient or relocate the receiving antenna.

airtight plastic bag before taking it from a cold to • Increase the separation between the equipment and receiver.

warm environment. Then take out the lens after it • Consult the dealer or an experienced radio/TV technician for has warmed gradually. Do the same when taking help.

the lens from a warm environment into a cold one. Do not leave the lens in excessive heat such as in a car in direct sunlight. High temperatures can cause the lens to malfunction.

a Safety Precautions

a Safety Precautions

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Nomenclature

Zoom ring (→ 5)

Focusing ring (→ 5)

Hood mount (→ 6)

Tripod mounting location (→ 12)

Distance scale (→ 11)

Filter mounting thread (→ 13)

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Contacts (→ 4)

Focus mode switch (→ 5)

Rubber ring (→ 4)

Image stabilizer switch (→ 8)

Image stabilizer mode selector switch (→ 8) Lens mount index (→ 4)

For detailed information, reference page numbers are provided in parentheses (→ **).

Zoom ring lock lever (→ 7)

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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 waterand dust-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 lensCOPYwith the rear end up to prevent the lens surface and electrical contacts from getting scratched.

•If the contacts get soiled, scratched, or have fingerprints on them, corrosion or faulty connections can result. The camera and lens may not operate properly.

•If the contacts get soiled or have fingerprints on them, clean them with a soft cloth.

•If you remove the lens, cover it with the dust cap. To attach it properly, align the lens mount index and the K index of the dust cap as shown in the diagram, and turn clockwise. To remove it, reverse the order.

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