Canon Ultrasonic EF300mm f 2.8L IS II USM Instruction Manual

Canon Ultrasonic EF300mm f 2.8L IS II USM manual cover
Pages 23
Year 2011
Language(s)
English en

Canon Ultrasonic EF300mm f 2.8L IS II USM Specification

The Canon Ultrasonic EF 300mm f/2.8L IS II USM Lens is a high-performance telephoto lens designed for professional photographers who demand superior image quality and robust performance in a variety of shooting conditions. With a focal length of 300mm and a maximum aperture of f/2.8, this lens is ideal for sports, wildlife, and action photography, offering exceptional clarity and dramatic background blur. The lens features Canon's advanced Image Stabilization (IS) technology, providing up to four stops of correction, which is crucial for handheld shooting in low-light environments. The Ultrasonic Motor (USM) ensures fast, quiet, and precise autofocus, while full-time manual focus allows photographers to tweak focus manually without switching modes. Constructed with a combination of fluorite and Ultra-low Dispersion (UD) elements, it minimizes chromatic aberrations and enhances sharpness and color fidelity. The lens is part of Canon's prestigious L-series, known for its superior build and optical performance, and it incorporates weather-sealing for protection against dust and moisture. The lens's lightweight magnesium alloy body reduces carrying weight, enhancing portability without compromising durability. The Fluorine coating on the front and rear elements resists smudges and makes cleaning easier. With a minimum focusing distance of approximately 2.0 meters and a maximum magnification of 0.18x, the lens offers versatile shooting capabilities. It is compatible with Canon Extenders, allowing photographers to increase focal length while maintaining image quality. The Canon EF 300mm f/2.8L IS II USM is a quintessential tool for professionals seeking exceptional image quality and reliability in a telephoto lens.

Canon Ultrasonic EF300mm f 2.8L IS II USM F.A.Q.

What are the optimal settings for shooting fast-moving subjects with the Canon EF300mm f/2.8L IS II USM lens?

For fast-moving subjects, set the lens to Mode 2 for panning shots and use AI Servo AF mode on your camera for continuous focus tracking. A fast shutter speed of around 1/1000s or faster is recommended.

How can I stabilize my shots when using the Canon EF300mm f/2.8L IS II USM lens without a tripod?

Utilize the image stabilization (IS) feature on the lens. For handheld shots, switch to Mode 1 for normal IS. Ensure good handholding techniques, such as tucking in your elbows and using your body for support.

What maintenance tips should I follow for the Canon EF300mm f/2.8L IS II USM lens to keep it in top condition?

Regularly clean the lens elements with a microfiber cloth and lens cleaning solution. Check the lens mount for dust and debris, and store the lens in a dry, cool place. Consider using a UV filter to protect the front element.

How do I switch focus modes on the Canon EF300mm f/2.8L IS II USM lens?

Switch between autofocus and manual focus using the AF/MF switch located on the side of the lens. For fine manual adjustments even in autofocus mode, use the full-time manual focus feature.

What should I do if the autofocus on my Canon EF300mm f/2.8L IS II USM lens is not working properly?

Ensure the lens is securely attached to the camera. Clean the electrical contacts on both the lens and the camera. If the issue persists, reset the camera settings or consult Canon support for further assistance.

Can I use teleconverters with the Canon EF300mm f/2.8L IS II USM lens, and what are the benefits?

Yes, the lens is compatible with Canon EF Extender 1.4x and 2x teleconverters. They increase the focal length to 420mm and 600mm, respectively, allowing for greater reach without sacrificing image quality.

How effective is the image stabilization on the Canon EF300mm f/2.8L IS II USM lens?

The lens features a 4-stop image stabilization system, effective for reducing blur from camera shake, especially in low-light conditions or when shooting handheld.

What is the best way to carry and transport the Canon EF300mm f/2.8L IS II USM lens?

Use the provided lens case and strap for protection during transport. When carrying, ensure the lens hood is reversed to save space and protect the front element.

How can I achieve the best bokeh effect using the Canon EF300mm f/2.8L IS II USM lens?

To achieve a pleasing bokeh, use a wide aperture, such as f/2.8, and maintain a good distance between the subject and the background. This will create a shallow depth of field and smooth out background details.

What precautions should I take when using the Canon EF300mm f/2.8L IS II USM lens in adverse weather conditions?

The lens is weather-sealed, but it's advisable to use a rain cover for extended usage in harsh conditions. Ensure that both the lens and camera are dry before storing them to prevent moisture damage.