Canon Ultrasonic EF24-70mm f 2.8L USM Instruction Manual

Canon Ultrasonic EF24-70mm f 2.8L USM manual cover
Pages 11
Year 2002
Language(s)
English en

Canon Ultrasonic EF24-70mm f 2.8L USM Specification

The Canon Ultrasonic EF24-70mm f/2.8L USM Lens is a versatile and high-performance lens designed for professional photographers who require exceptional image quality and reliability. It features a focal length range of 24-70mm, making it ideal for a variety of shooting scenarios, from wide-angle landscapes to portrait photography. The lens boasts a constant maximum aperture of f/2.8, enabling excellent low-light performance and depth-of-field control.

Constructed with a robust build quality characteristic of Canon's L-series, the lens offers enhanced durability and weather resistance, making it suitable for challenging environmental conditions. The optical design incorporates 16 elements in 13 groups, including Super UD and aspherical lens elements, which work together to minimize chromatic aberrations and distortions, ensuring sharp and clear images across the zoom range.

The Ultrasonic Motor (USM) provides fast, accurate, and near-silent autofocus, beneficial for both still photography and video recording. The lens also allows full-time manual focus override, offering photographers precise control over focus adjustments. With a minimum focusing distance of 0.38 meters, it enables close-up shots with a maximum magnification of 0.29x.

The Canon EF24-70mm f/2.8L USM lens includes a nine-blade circular aperture, producing pleasing bokeh and smooth background blur, enhancing the aesthetic quality of out-of-focus areas. It has a filter diameter of 77mm and comes with a lens hood to reduce flare and ghosting. Weighing approximately 950 grams, the lens offers a balanced feel when attached to a camera body, making it a practical choice for professional use.

Canon Ultrasonic EF24-70mm f 2.8L USM F.A.Q.

What are the key features of the Canon Ultrasonic EF24-70mm f/2.8L USM lens?

The Canon EF24-70mm f/2.8L USM lens features a versatile focal length range, a constant f/2.8 aperture, advanced optical elements for reduced aberrations, and a robust build quality with weather sealing, making it ideal for professional photography.

How can I troubleshoot autofocus issues with the Canon EF24-70mm f/2.8L USM lens?

Check the AF/MF switch to ensure it is set to AF, clean the lens and camera contacts, update the camera firmware, and try using a different camera body to isolate the problem.

What maintenance steps are recommended for the Canon EF24-70mm f/2.8L USM lens?

Regularly clean the lens elements with a microfiber cloth, store the lens in a dry environment, check for dust or debris in moving parts, and have the lens serviced by professionals periodically.

How do I achieve the best image quality with the Canon EF24-70mm f/2.8L USM lens?

Use the lens at its optimal aperture range (f/5.6 to f/8), ensure proper focus, and use a tripod for stability during longer exposures or low light conditions.

What should I do if my Canon EF24-70mm f/2.8L USM lens is not zooming smoothly?

Check for any physical obstructions or damage, ensure the lens is properly mounted, and consider having the lens serviced if the issue persists to prevent further damage.

Can the Canon EF24-70mm f/2.8L USM lens be used for video recording?

Yes, the lens is suitable for video recording due to its fast and silent autofocus, constant aperture, and versatile zoom range, making it ideal for various shooting scenarios.

How do I clean the front and rear elements of my Canon EF24-70mm f/2.8L USM lens?

Use a blower to remove loose dust, apply lens cleaning solution to a microfiber cloth, and gently wipe the lens elements in a circular motion to avoid scratches.

What is the proper way to store the Canon EF24-70mm f/2.8L USM lens?

Store the lens in a dry, cool environment, preferably in a padded camera bag or case, with lens caps on to protect the elements from dust and scratches.

What should I do if my Canon EF24-70mm f/2.8L USM lens experiences lens flare?

Use the lens hood to minimize flare, avoid shooting directly into light sources, and try adjusting the angle of the shot to reduce unwanted reflections.

Is the Canon EF24-70mm f/2.8L USM lens compatible with Canon's image stabilization technology?

No, the Canon EF24-70mm f/2.8L USM lens does not have built-in image stabilization. It is recommended to use a tripod or camera body with in-body stabilization if necessary.