Canon Ultrasonic EF70-200mm f 4L IS II USM Instruction Manual

Canon Ultrasonic EF70-200mm f 4L IS II USM manual cover
Pages 19
Year 2017
Language(s)
English en

Canon Ultrasonic EF70-200mm f 4L IS II USM Specification

The Canon Ultrasonic EF70-200mm f/4L IS II USM Lens is a professional-grade telephoto zoom lens designed for Canon's EOS DSLR cameras, offering exceptional optical performance and versatility. With a focal length range of 70-200mm, it is ideal for various photography styles, including sports, wildlife, and portraiture. The lens boasts a constant maximum aperture of f/4, ensuring consistent exposure settings throughout the zoom range. The advanced optical design incorporates one fluorite element and two ultra-low dispersion (UD) elements, effectively minimizing chromatic aberrations and delivering high-resolution, sharp images with excellent color fidelity.

The lens is equipped with a 5-stop Image Stabilization (IS) system, providing significant handheld shooting flexibility, especially in low-light conditions. This IS system is designed to detect and correct for both regular and angular camera shakes, improving image stability. The Ultrasonic Motor (USM) ensures fast, precise, and near-silent autofocus performance, making it suitable for both still photography and video recording.

Constructed as part of Canon’s esteemed L-series, the lens features superior build quality with dust and moisture-resistant sealing, allowing for reliable performance in challenging environments. The lens' exterior is designed with a fluorine coating to resist smudges and fingerprints, facilitating easier maintenance. Weighing approximately 780 grams, it maintains a relatively lightweight and compact profile for a lens of its class, enhancing portability without compromising durability. The Canon EF70-200mm f/4L IS II USM Lens is an optimal choice for photographers seeking a robust, high-performance telephoto lens with advanced stabilization and superior optical quality.

Canon Ultrasonic EF70-200mm f 4L IS II USM F.A.Q.

What is the best way to clean the Canon EF70-200mm f/4L IS II USM lens?

To clean the lens, use a soft, lint-free cloth or a microfiber cleaning cloth. Gently wipe the lens elements. For stubborn dirt, use a blower to remove dust, then apply a small amount of lens cleaning solution to the cloth and clean the lens in circular motions. Avoid spraying liquids directly onto the lens.

How do I properly store the Canon EF70-200mm f/4L IS II USM lens?

Store the lens in a cool, dry place inside its protective case or a padded camera bag. Keep it away from direct sunlight and extreme temperatures. Use silica gel packets to reduce moisture and prevent fungal growth.

What should I do if the autofocus on my Canon EF70-200mm f/4L IS II USM lens is not working?

First, ensure that the camera body is set to autofocus mode. Check the lens and camera contacts for dirt or damage. Clean them with a dry microfiber cloth if necessary. If the problem persists, try testing the lens on another camera body to determine if the issue is with the lens or the camera.

How can I reduce lens flare when using the Canon EF70-200mm f/4L IS II USM lens?

To reduce lens flare, use the lens hood provided with the lens, which helps block stray light. Avoid shooting directly into strong light sources, and adjust your angle slightly if necessary. Additionally, keep your lens clean to prevent flare from dust and smudges.

How do I calibrate the Canon EF70-200mm f/4L IS II USM lens for accurate focus?

Use the camera's micro-adjustment feature if available. Set up a focus calibration tool or target, and take test shots at various micro-adjustment settings to determine which provides the sharpest focus. Consult your camera's manual for detailed instructions on performing micro-adjustment.

What is the recommended maintenance schedule for the Canon EF70-200mm f/4L IS II USM lens?

Regularly inspect and clean the lens exterior and elements. Check the functionality of the zoom and focus rings. Perform a thorough cleaning and inspection every 6 to 12 months, depending on usage frequency and environmental conditions. Consider professional servicing every 1-2 years.

Can I use the Canon EF70-200mm f/4L IS II USM lens in the rain?

The lens is weather-sealed, providing some protection against dust and moisture. However, it is recommended to use a rain cover or protective gear in heavy rain to avoid potential water damage. Always dry the lens thoroughly if it becomes wet.

How do I switch between image stabilization modes on the Canon EF70-200mm f/4L IS II USM lens?

The lens features two IS modes. Mode 1 is for general photography and stabilizes along both axes, while Mode 2 is designed for panning shots and stabilizes only the vertical axis. Use the IS mode switch on the side of the lens to toggle between these modes.

What should I do if the zoom ring on my Canon EF70-200mm f/4L IS II USM lens becomes stiff?

If the zoom ring feels stiff, check for debris or dirt around the zoom ring and gently clean it. Avoid using force. If the issue persists, it may require professional servicing to avoid further damage.

How can I achieve the best image quality with the Canon EF70-200mm f/4L IS II USM lens?

For optimal image quality, shoot with an aperture of f/8-f/11 for sharpness. Use a tripod to minimize camera shake, and enable image stabilization when shooting handheld. Regularly clean the lens elements to avoid artifacts from dust and smudges.