Introduction of Canon Camera Lens EF-S55-250mm F/4-5.6

The Canon  EF-S55-250mm F/4-5.6 is a telephoto zoom lens designed for Canon EF-S mount cameras. This lens is perfect for capturing distant subjects, such as wildlife, sports, and performance events. With a focal length range equivalent to 88-400mm on a full-frame camera, this lens offers significant versatility and reach. The estimated price of this lens is around $300, making it an affordable option for photographers looking to expand their lens collection. The lens was launched in August 2017.

The Canon EF-S55-250mm f/4-5.6 IS II lens is a high-performance telephoto zoom lens equipped with an Image Stabilizer, and has been developed for digital SLRs compatible with EF-S lenses*. It is equipped with an Image Stabilizer effective for hand-held shooting at slow shutter speeds.

Only the following EOS cameras are compatible with EF-S lenses (as of May 2014)

• EOS 7D, EOS 70D, EOS 60D, EOS 60Da, EOS 50D, EOS 40D, EOS 30D, EOS 20D, EOS 20Da, EOS REBEL T5i/700D, EOS REBEL SL1/100D, EOS REBEL T4i/650D, EOS 
• REBEL T3i/600D, EOS REBEL T2i/550D, EOS REBEL T1i/500D, EOS REBEL XSi/450D, EOS REBEL T5/1200D, EOS REBEL T3/1100D, EOS REBEL XS/1000D, EOS 
• DIGITAL REBEL XTi/400D DIGITAL, EOS DIGITAL REBEL XT/350D DIGITAL, EOS DIGITAL REBEL/300D DIGITAL
• EOS M2*1 and EOS M when used together with Mount Adapter EF-EOS M

“IS” stands for Image Stabilizer.

Specifications of EF-S55-250mm F/4-5.6

• Equivalent to 88-400 mm in the 35 mm film format.
• The lens length is measured from the mount surface to the front end of the lens. Add 21.5 mm to include the  E-58 lens cap and dust cap, and 24.2 mm for the E-58 II.
• The size and weight listed are for the lens only, except as indicated.
• Aperture settings are specified on the camera. The camera automatically compensates for variations in the aperture setting when the camera is zoomed in or out.
• The EF1.4X III/EF2X III extenders cannot be used with this lens.
• All data listed is measured according to Canon standards.
• Product specifications and appearance are subject to change without notice.

Description of Canon EF-S55-250mm F/4-5.6

The Canon Camera Lens features a sophisticated optical design, including one aspherical element that helps to reduce spherical aberrations and distortion for sharp, clear image quality. The lens also features a super spectra coating that reduces ghosting and flare, ensuring optimal image quality even in challenging lighting conditions. The lens has a minimum focusing distance of 2.79 feet (0.85 meters) and a maximum magnification of 0.29x, making it ideal for close-up photography as well. The lens features a seven-blade circular aperture that creates beautiful bokeh effects in out-of-focus areas.

Troubleshooting of Canon EF-S55-250mm F/4-5.6

Common problems with this lens may include focus issues, such as front or back focusing. If you experience this issue, try adjusting the autofocus micro-adjustment settings in your camera. Another common issue is lens flare or ghosting, which can be reduced by using the super spectra coating and a lens hood. It's important to use a high-quality, UV or polarizing filter to protect the lens from dirt, dust, and moisture. Always make sure the lens is securely attached to the camera body and avoid touching the lens elements.

Features

1. The Image Stabilizer gives the equivalent effect of a shutter speed four stops faster*2. This function provides optimal image stabilization depending on shooting conditions (such as shooting still subjects and following shots).
2. UD lens elements for excellent imaging performance.
3. Great close-ups at 1.1 m/3.6 ft at all focal lengths.
4. A truly round aperture hole results in a nicer background blur.
   • Not available in certain countries and regions.
   • Based on [1/(focal length x 1.6)] second. Generally, it requires a shutter speed [1/focal length] second or faster to prevent camera shake (in 35mm format. With an EF-S lens, it would be [1/(focal length x 1.6)] second).

Conventions used in this instruction

• Warning to prevent lens or camera malfunction or damage.
• Supplementary notes on using the lens and taking pictures.

Nomenclature

Mounting and Detaching the Lens

See your camera’s instructions for details on mounting and detaching the lens.

• After detaching the lens, place the lens with 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 ❏ index of the dust cap as shown in the diagram, and turn clockwise. To remove it, reverse the order.

Setting the Focus Mode

To shoot in autofocus mode, set the focus mode switch to AF. To use only manual focusing, set the focus mode switch to MF, and focus by turning the focusing ring.

• Do not touch the rotating parts of the lens while autofocus is active.
• Do not adjust focus manually when the focus mode switch is set to AF.

Zooming

To zoom, turn the lens’ zoom ring.
Be sure to finish zooming before focusing. Changing the zoom ring after focusing can affect the focus.

Hood (Sold Separately)

The ET-60 hood can keep unwanted light out of the lens, and also protects the lens from rain, snow, and dust. Turn the hood in the direction of the arrow to attach it securely. The hood can be reverse-mounted on the lens for storage.

• 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.
• Part of the picture may be blocked if the hood is not attached properly.

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 and following shots).

1. Set the STABILIZER switch to ON  .
   If you are not going to use the image stabilizer function, set the switch to OFF .
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
   • The Image Stabilizer cannot compensate for a blurred shot caused by a subject that moved.
   • 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, resulting in fewer shots and a shorter movie shooting time.
   • 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.
   • Even with a monopod, the Image Stabilizer will be as effective as during hand-held shooting. However, depending on the shooting environment, the Image Stabilizer effect may be less effective.
   • The image stabilizer function also operates when the lens is used with an Extension Tube EF12 ll or EF25 ll.
   • 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.

Image Stabilizer

The image stabilizer in this lens is effective for hand-held shots under the following conditions.

• 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. z In situations where fast shutter settings cannot be used.
• When panning subjects in motion.

Filters (Sold Separately)

You can attach filters to the filter mounting thread on the front of the lens.

• The front end of the lens rotates, so hold it when attaching the filter.
• Use a genuine Canon filter (58mm).
• To adjust the polarizing filter, first remove the lens hood.

Extension Tubes (Sold Separately)

You can attach Extension Tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below.

Manual focusing is recommended for accurate focusing.

Close-up Lenses (Sold separately)

Attaching a 250D or 500D (58mm) Close-up Lens enables close-up photography.
The magnification will be as follows.

• Close-up Lens 250D: 0.23x - 1.42x
• Close-up Lens 500D: 0.11x - 0.86x

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.

Handling Cautions

• If the lens is taken from a cold environment into a warm one, condensation may develop on the lens surface and internal parts. To prevent condensation in this case, first put the lens into an airtight plastic bag before taking it from a cold to warm environment. Then take out the lens after it has warmed gradually. Do the same when taking 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.
• 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.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Pros & Cons of Canon Camera Lens EF-S55-250mm F/4-5.6

Pros

• Versatile telephoto zoom lens for Canon EF-S mount cameras
• Affordable price point
• Optical image stabilization for sharp images
• Super spectra coating to reduce ghosting and flare
• Lightweight and compact design

Cons

• Not compatible with full-frame cameras
• Maximum aperture of f/4-5.6 may not be suitable for low-light photography
• Plastic construction may feel less durable than higher-end lenses
• No weather sealing

Customer Reviews about Canon EF-S55-250mm F/4-5.6

Customers have praised the Canon EF-S55-250mm F/4-5.6 for its sharp image quality, lightweight design, and affordable price point. Many reviewers have noted that the lens is ideal for travel and outdoor photography, and the optical image stabilization feature is a significant advantage when shooting at longer focal lengths. However, some reviewers have noted that the lens can be prone to flare and ghosting in bright lighting conditions, and the plastic construction may not feel as durable as higher-end lenses. Overall, this lens is an excellent option for photographers looking for an affordable telephoto zoom lens for their Canon EF-S mount camera.