Canon Ultrasonic EF70-300mm f 4-5.6L IS USM Instruction Manual

Canon Ultrasonic EF70-300mm f 4-5.6L IS USM manual cover
Pages 16
Year 2010
Language(s)
English en

Canon Ultrasonic EF70-300mm f 4-5.6L IS USM Specification

The Canon Ultrasonic EF70-300mm f/4-5.6L IS USM Lens is a versatile telephoto zoom lens designed for professional and advanced amateur photographers who demand superior performance and durability. With a focal length range of 70-300mm, this lens is ideal for capturing sports, wildlife, and portrait photography. It features an aperture range of f/4-5.6, which allows for excellent depth of field control and low-light performance. The lens incorporates Canon's advanced Ultrasonic Motor (USM) technology, ensuring fast, precise, and nearly silent autofocus operation. Additionally, it includes a sophisticated Image Stabilization (IS) system that offers up to four stops of shake correction, enhancing handheld shooting capabilities in challenging conditions.

Constructed with Canon’s renowned L-series quality, the lens boasts a robust and weather-resistant design, making it suitable for use in various environmental conditions. The optical construction includes 19 elements in 14 groups, featuring Ultra-low Dispersion (UD) elements to minimize chromatic aberrations and enhance image clarity and sharpness. The lens also utilizes Canon's Super Spectra Coating to reduce ghosting and flare, improving contrast and color accuracy.

The lens has a minimum focusing distance of 1.2 meters, providing flexibility in capturing close-up details. It is compatible with both full-frame and APS-C Canon EOS DSLR cameras, where it offers an equivalent focal length range of approximately 112-480mm on APS-C sensors. With a weight of approximately 1050 grams, the lens balances well with Canon's professional camera bodies, ensuring comfortable handling during extended shooting sessions. This lens is an excellent choice for photographers seeking a reliable, high-performance telephoto zoom lens with professional-grade features.

Canon Ultrasonic EF70-300mm f 4-5.6L IS USM F.A.Q.

How do I attach the Canon EF70-300mm f/4-5.6L IS USM lens to my camera?

Align the lens mount index on the lens with the corresponding index on the camera body. Rotate the lens clockwise until it clicks into place, indicating it is securely attached.

What is the best way to clean the lens surfaces of the Canon EF70-300mm f/4-5.6L IS USM?

Use a soft, lint-free cloth, preferably a microfiber cloth. For smudges or fingerprints, you can use a small amount of lens cleaning solution applied to the cloth, not directly on the lens.

How can I troubleshoot autofocus issues with my Canon EF70-300mm f/4-5.6L IS USM lens?

Ensure the AF/MF switch on the lens is set to AF. Check if the camera's autofocus settings are correct and try cleaning the lens and camera contacts. If issues persist, consider resetting the camera settings or testing the lens on a different camera body.

What is the function of the IS (Image Stabilizer) mode on the Canon EF70-300mm f/4-5.6L IS USM lens?

The Image Stabilizer helps reduce camera shake, allowing for sharper images when shooting handheld. It is especially useful in low-light conditions or when using slower shutter speeds.

Can I use filters with the Canon EF70-300mm f/4-5.6L IS USM lens?

Yes, the lens has a filter diameter of 67mm, and you can attach various filters such as UV, polarizing, or neutral density filters to enhance your photography.

What should I do if the zoom ring on my Canon EF70-300mm f/4-5.6L IS USM lens feels stiff?

Check for any visible obstructions or debris around the zoom ring. If none are found, gently rotate the ring back and forth to see if it loosens. Persistent stiffness may require professional servicing.

How often should I send my Canon EF70-300mm f/4-5.6L IS USM lens for professional maintenance?

It's recommended to have a professional maintenance check every one to two years, depending on usage intensity, to ensure optimal performance and longevity of the lens.

Can I use the Canon EF70-300mm f/4-5.6L IS USM lens for video recording?

Yes, the lens is suitable for video recording and provides smooth and quiet autofocus, which is beneficial for capturing high-quality video footage.

What is the minimum focusing distance of the Canon EF70-300mm f/4-5.6L IS USM lens?

The minimum focusing distance is approximately 1.2 meters (3.9 feet), allowing for relatively close-up shots while maintaining focus.

What precautions should I take when using the Canon EF70-300mm f/4-5.6L IS USM lens in wet conditions?

While the lens is weather-sealed, it's advisable to use a rain cover or protective gear to prevent moisture from entering the lens or camera body, ensuring longevity and performance.