Canon Ultrasonic EF28-300mm f 3.5-5.6L IS USM Instruction Manual

Canon Ultrasonic EF28-300mm f 3.5-5.6L IS USM manual cover

Pages 16

Year 2004

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Canon Ultrasonic EF28-300mm f 3.5-5.6L IS USM Specification

The Canon Ultrasonic EF28-300mm f/3.5-5.6L IS USM Lens is a versatile, high-performance lens designed for professional photographers seeking a broad focal range in a single, portable package. It features a focal length ranging from 28mm to 300mm, offering exceptional flexibility from wide-angle to telephoto shots. The lens is equipped with a maximum aperture of f/3.5 at 28mm and f/5.6 at 300mm, allowing for effective control over depth of field and performance in various lighting conditions. The inclusion of Image Stabilization (IS) technology compensates for camera shake, enabling handheld shooting at slower shutter speeds, which is particularly useful in low-light environments.

The lens utilizes Canon's Ultrasonic Motor (USM) for fast and near-silent autofocus, making it ideal for both still photography and video recording. Its optical construction comprises 23 elements in 16 groups, including aspherical and Super UD elements to minimize chromatic aberrations and deliver sharp, high-contrast images throughout the zoom range. The lens is part of Canon's professional L-series, characterized by superior build quality and weather sealing for durability in challenging conditions. With a minimum focusing distance of 0.7 meters, the lens can capture detailed close-ups, enhancing its versatility.

This lens is compatible with full-frame and APS-C Canon DSLR cameras, where it offers an effective focal length range of approximately 45-480mm on the latter. The lens's robust design, combined with its extensive zoom range and advanced technologies, makes it a highly suitable choice for travel, wildlife, and sports photography, where adaptability and reliability are paramount.

Canon Ultrasonic EF28-300mm f 3.5-5.6L IS USM F.A.Q.

How do I properly clean the Canon Ultrasonic EF28-300mm f/3.5-5.6L IS USM Lens?

To clean the lens, first use a soft brush or a blower to remove loose dust and debris. Then, use a microfiber cloth slightly dampened with lens cleaning solution to gently wipe the lens surface. Avoid excessive pressure and ensure the cloth is clean to prevent scratches.

What is the best way to avoid lens flare when using this lens in bright conditions?

To minimize lens flare, use a lens hood to block stray light from entering the lens. Additionally, try positioning yourself so that the sun or bright light source is not directly hitting the front element of the lens.

How can I troubleshoot autofocus issues with the Canon EF28-300mm lens?

If you experience autofocus issues, ensure the lens and camera firmware are updated. Clean the lens and camera contacts with a soft, dry cloth. Try switching between AF and MF modes, and check if the lens is properly mounted. If problems persist, professional servicing may be required.

What settings should I use for shooting fast-moving subjects?

For fast-moving subjects, use a faster shutter speed (1/500s or faster), continuous autofocus (AI Servo), and burst shooting mode. Consider setting a wider aperture to allow more light and increase the ISO if necessary to maintain a proper exposure.

How do I maintain image stabilization (IS) effectiveness on this lens?

To maintain IS effectiveness, ensure the IS switch is enabled when needed and disable it when using a tripod to save battery. Regularly check for firmware updates and handle the lens carefully to prevent internal damage to the IS components.

Can I use this lens with Canon mirrorless cameras?

Yes, you can use this lens with Canon mirrorless cameras by using an EF to RF mount adapter. Ensure the adapter is compatible and supports autofocus and image stabilization features for optimal performance.

What should I do if the zoom ring feels stiff?

If the zoom ring feels stiff, ensure there is no debris caught in the ring. Gently rotating it back and forth may help dislodge any particles. If the problem persists, it may require professional servicing to lubricate or repair the internal mechanisms.

How do I store the lens to ensure its longevity?

Store the lens in a cool, dry place, ideally in a padded lens case or camera bag. Use silica gel packs to control humidity and prevent mold. Keep the lens caps on to protect the glass elements from dust and scratches.

What should I do if the lens is not recognized by the camera?

Ensure the lens is properly attached. Clean the contact points on the lens and camera with a dry, lint-free cloth. Try restarting the camera and reattaching the lens. If issues persist, check for firmware updates or consult a technician.

What precautions should I take when using this lens in extreme weather conditions?

In extreme weather, use a weather-sealed camera body and additional rain covers for added protection. Avoid sudden temperature changes to prevent condensation. Regularly check and clean the lens to remove moisture or debris.