Canon RF 24-240mm F4-6.3 IS USM Lens Instruction Manual

1. Introduction

The Canon RF 24-240mm F4-6.3 IS USM lens is a versatile 10x zoom lens designed for Canon EOS R series full-frame mirrorless cameras. It offers a broad focal range from wide-angle to telephoto, making it suitable for various photography situations, including travel and everyday use. This lens incorporates Canon's Nano USM technology for fast and quiet autofocus, along with optical image stabilization to help reduce camera shake.

Figure 1: Front view of the Canon RF 24-240mm F4-6.3 IS USM Lens, showcasing its compact design.

2. What's in the Box

Upon opening your Canon RF 24-240mm F4-6.3 IS USM Lens package, you should find the following items:

• RF24-240mm F4-6.3 IS USM Lens
• Lens Cap E-72II
• Lens Dust Cap RF
• Printed Matter Unit (Documentation)

3. Key Features

• Compact, Lightweight 10x Zoom RF Lens: Offers a broad 24-240mm focal range in a portable design.
• High Image Quality and Bright f/4-6.3 Lens Aperture: Delivers clear images across its zoom range.
• Optical Image Stabilization with up to 5 Stops on Shake Correction: Minimizes blur from camera movement, especially in low light or at longer focal lengths.
• High Speed, Smooth and Quiet Auto Focus with Nano USM: Provides fast and precise autofocus for both stills and video, with minimal operational noise.
• First Canon Lens with Dynamic IS for Full-frame Cameras: Enhances stability during video recording.
• Lens compatible with Canon Full Frame Mirrorless Cameras (EOS RP, EOS R, EOS R5, EOS R6): Designed specifically for Canon's RF mount system.

4. Setup

4.1 Attaching the Lens

1. Ensure your camera is powered off.
2. Remove the rear lens cap and the camera body cap.
3. Align the red index mark on the lens with the red index mark on the camera body.
4. Rotate the lens clockwise until it clicks into place.

4.2 Lens Lock

The lens features a lock switch to prevent accidental extension during transport. To use the zoom function, ensure the lock switch is in the unlocked position. The lock is typically engaged when the lens is at its most compact (24mm) setting.

Figure 2: Side view of the lens, highlighting the lock switch for secure transport.

5. Operating the Lens

5.1 Zooming

To adjust the focal length, rotate the zoom ring on the lens. The lens extends as you zoom towards the telephoto end (240mm) and retracts towards the wide-angle end (24mm).

5.2 Focus and Control Ring

This lens features a customizable control ring that can be assigned to various functions, including focus adjustment, aperture control, or ISO. By default, it may function as a focus ring. To switch its function, you typically need to access the camera's menu settings. Refer to your camera's instruction manual for specific steps on customizing the control ring.

5.3 Image Stabilization

The lens is equipped with optical image stabilization, providing up to 5 stops of shake correction. This feature helps to produce sharper images and smoother video, especially when shooting handheld or in challenging lighting conditions. The image stabilization can typically be toggled on or off via a switch on the lens barrel or through the camera's menu.

5.4 Autofocus (AF) and Manual Focus (MF)

The Canon RF 24-240mm F4-6.3 IS USM lens utilizes Nano USM for fast, smooth, and quiet autofocus. You can switch between autofocus and manual focus modes using a switch on the lens barrel or through your camera's menu. In manual focus mode, rotate the focus ring to achieve desired sharpness.

6. Maintenance

6.1 Cleaning the Lens

• Use a lens blower to remove dust and loose particles from the lens surface.
• For smudges or fingerprints, use a clean, soft microfiber cloth specifically designed for optics, along with a lens cleaning solution.
• Never use abrasive materials or harsh chemicals.

6.2 Storage

• Always attach the front and rear lens caps when the lens is not in use.
• Store the lens in a cool, dry place, away from direct sunlight and extreme temperatures.
• If storing for extended periods, consider using a dehumidifying agent to prevent mold growth.

7. Troubleshooting

7.1 Image Quality Issues

• Chromatic Aberration: In high-contrast areas, especially at wide angles, some color fringing may occur. For JPEG images, in-camera lens correction can often mitigate this. For RAW files, post-processing software like Adobe Lightroom can be used to correct chromatic aberration.
• Light Fall-off (Vignetting): Darkening at the corners of the image may be noticeable, particularly at wider apertures and focal lengths. In-camera lens correction for JPEGs or post-processing for RAW files can correct this.
• Distortion: Wide-angle shots may exhibit some barrel distortion. In-camera lens correction (for JPEGs) or lens profiles in post-processing software (for RAW) can correct this.

7.2 Lens Not Zooming

Ensure the lens lock switch is in the unlocked position. The lock is designed to prevent the lens from extending unintentionally during transport.

7.3 Autofocus Problems

• Check that the lens is set to AF (Autofocus) mode, not MF (Manual Focus).
• Ensure there is sufficient light and contrast in your subject for the autofocus system to work effectively.
• Clean the lens contacts on both the lens and camera body.

8. Specifications

9. Warranty and Support

This Canon lens is covered by Canon's standard manufacturer's warranty. For detailed information regarding warranty terms, conditions, and registration, please refer to the documentation included in your product package or visit the official Canon USA website. For technical support, service, or additional inquiries, please contact Canon customer service directly.