Canon Ultrasonic EF200-400mm f 4L IS USM Extender 1.4x Instruction Manual

Canon Ultrasonic EF200-400mm f 4L IS USM Extender 1.4x manual cover
Pages 29
Year 2013
Language(s)
English en

Canon Ultrasonic EF200-400mm f 4L IS USM Extender 1.4x Specification

The Canon Ultrasonic EF200-400mm f/4L IS USM Extender 1.4x lens is a high-performance super-telephoto zoom lens designed for professional photographers seeking versatility and precision in capturing distant subjects. This lens integrates a built-in 1.4x extender, allowing users to increase the focal length from 200-400mm to 280-560mm with a simple switch, providing exceptional flexibility in various shooting scenarios. It features a constant f/4 maximum aperture, ensuring consistent exposure and depth of field control across the entire zoom range.

The lens incorporates Canon's sophisticated Image Stabilization (IS) technology, offering up to four stops of shake correction, which is ideal for handheld shooting in challenging lighting conditions. The Ultrasonic Motor (USM) ensures fast, silent, and accurate autofocus, while full-time manual focus override allows for precise adjustments. Constructed with a robust weather-sealed design, it is engineered to withstand harsh environments, making it suitable for wildlife, sports, and nature photography.

Optically, the lens employs Fluorite and Ultra-low Dispersion (UD) elements to minimize chromatic aberrations and enhance image clarity and color fidelity. A SubWavelength Structure Coating (SWC) reduces flare and ghosting, ensuring high contrast and sharpness even in backlit situations. The lens' circular aperture contributes to pleasing background blur, or bokeh, enhancing the subject's isolation.

Weighing approximately 3620 grams and measuring 128 x 366 millimeters, the Canon EF200-400mm f/4L IS USM Extender 1.4x balances substantial optical performance with manageable portability. It is compatible with Canon's range of EOS cameras and supports various filter types with its 52mm drop-in filter size. This lens is a testament to Canon's commitment to delivering professional-grade, high-performance optics for demanding photographers.

Canon Ultrasonic EF200-400mm f 4L IS USM Extender 1.4x F.A.Q.

What are the key features of the Canon Ultrasonic EF200-400mm f/4L IS USM Extender 1.4x Lens?

The Canon EF200-400mm f/4L IS USM Extender 1.4x Lens features a built-in 1.4x extender, Image Stabilization, and advanced optics for high-quality images. It is designed for sports and wildlife photography, offering versatility and excellent performance.

How do I activate the built-in extender on the Canon EF200-400mm lens?

To activate the built-in extender, slide the extender lever located on the lens barrel to the "1.4x" position. This increases the focal length by 1.4 times, changing the range to 280-560mm.

What are the maintenance tips for the Canon EF200-400mm f/4L IS USM lens?

Regularly clean the lens surfaces with a microfiber cloth, store the lens in a dry, dust-free environment, and check the lens cap and hood for proper attachment. Use a blower to remove dust from the lens elements.

How can I troubleshoot autofocus issues with this lens?

Ensure the AF/MF switch is set to AF, clean the lens and camera contacts with a microfiber cloth, check that the camera's firmware is up to date, and try testing the lens on another camera body to rule out camera issues.

What should I do if the Image Stabilization (IS) is not working properly?

Verify that the IS switch on the lens is set to the "ON" position, ensure the battery is fully charged, and test the IS function in different modes. If the issue persists, consider contacting Canon support.

Can I use filters with the Canon EF200-400mm lens?

Yes, the lens supports drop-in filters with a diameter of 52mm. To use, simply insert the filter into the designated filter holder located near the rear of the lens.

How do I properly store the Canon EF200-400mm lens to ensure longevity?

Store the lens in a padded case or bag, in a cool, dry place. Avoid exposing the lens to extreme temperature fluctuations and humidity. Use silica gel packs to control moisture.

What is the best way to clean the Canon EF200-400mm lens?

Use a blower to remove loose dust, then gently clean with a microfiber cloth. For stubborn smudges, lightly moisten the cloth with lens cleaning solution. Avoid excessive pressure to prevent scratches.

How can I adjust the focal range quickly on this lens?

Use the focus limiter switch to set the desired focusing range, and rotate the zoom ring to adjust the focal length. The built-in extender can also be activated for an increased range.

Is the Canon EF200-400mm lens compatible with all Canon DSLR cameras?

The lens is compatible with all Canon EOS DSLR cameras. However, using it with full-frame cameras will utilize the lens's full potential, while APS-C cameras will provide a crop factor effect.