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Owner's of the Canon Camera Accessories Canon 40 Mm F/2.8 Medium Telephoto Lens For Canon gave it a score of 0 out of 5. Here's how the scores stacked up:
CT1-8581-001 1210SZ © CANON INC. 2012
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3. Hood (Sold Separately)
The ES-52 hood can keep unwanted light out of the lens, and also protects the
lens from rain, snow, and dust.
When attaching the hood, securely attach it to the filter mounting thread (ø52mm)
on the front of the lens, or to the thread (ø52mm) on the front of the filter that is
already fitted to the lens (excluding older Canon circular polarizing filters that do
not have a filter mounting thread on the front)
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Part of the picture may be blocked if the hood is not attached properly.
4. Filters (Sold Separately)
You can attach filters to the front of the lens, or to the filter mounting thread
(ø52mm) on the front of the hood.
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Only one filter may be attached.
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Use the Canon Circular Polarizing Filter PL-C B (ø52mm) as the
polarizing filter.
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You can use hoods and filter attached in any order.
5. Extension Tubes (Sold Separately)
You can attach extension tube EF12 II or EF25 II for magnified shots. For
shooting distance and magnification, see the extension tube specifications.
MF mode is recommended for accurate focusing.
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The lens length is measured from the mount surface to the front end of the
lens. Add 21.5 mm to include the E-52 lens cap and dust cap, and 23.9 mm for
the E-52 II.
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The extenders cannot be used with this lens.
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The close-up lenses cannot be used with this lens. (The end of the lens will
become heavy, causing the focus to become unstable.)
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CASE (Sold Separately) LP811
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 equipment has been tested and found to comply with the limits for a class
B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio 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 determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Consult the dealer or an experienced radio/TV technician for help.
Specifications
* Sold Separately
Angle of view
Lens
construction
Minimum
aperture
Max.
magnification
Min. focusing
distance
Filter diameter Max. diameter and length Weight Hood* Lens Cap Case*
Diagonal Vertical Horizontal
EF40mm f/2.8 STM 57°30’ 34° 49°20’ 4-6 22 0.18x 0.3m/0.98ft 52mm 68.2x22.8mm (2.7”x0.9”) 130g/4.6oz. ES-52 E-52/E-52 II LP811
Extension Tube Specifications
(Sold Separately)
Magnification
(X)
Focusing Distance Range
(mm) (inch)
EF40mm f/2.8 STM
EF12 II 0.32-0.50 175-217 (6.9-8.5)
EF25 II 0.70-0.88 156-164 (6.1-6.5)
C OPY
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