Sigma 24mm f/1.4 DG HSM Art Lens for Nikon F: User Manual

Introduction

This manual provides essential instructions for the safe and effective use of your Sigma 24mm f/1.4 DG HSM Art Lens for Nikon F-mount cameras. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity. This lens is designed for wide-angle photography, offering a large f/1.4 aperture for excellent low-light performance and shallow depth of field.

Product Overview

The Sigma 24mm f/1.4 DG HSM Art Lens is a high-performance wide-angle prime lens. It features a robust construction and advanced optical design to deliver exceptional image quality.

Figure 1: Front view of the Sigma 24mm f/1.4 DG HSM Art Lens, showcasing the front element and focus ring.

Figure 2: The Sigma 24mm f/1.4 DG HSM Art Lens with its included lens hood attached, designed to reduce flare and protect the front element.

Figure 3: Side view of the lens, highlighting the AF/MF (Autofocus/Manual Focus) switch for selecting focus modes.

Figure 4: Rear view of the lens, displaying the Nikon F-mount interface and electronic contacts for communication with the camera body.

Setup

Attaching the Lens

1. Ensure both the camera and the lens are powered off.
2. Remove the rear lens cap from the lens and the body cap from the camera.
3. Align the mounting index (usually a white dot or line) on the lens barrel with the corresponding index on the camera body.
4. Insert the lens into the camera's lens mount and rotate it clockwise until it clicks securely into place. Do not force the lens.
5. Attach the lens hood by aligning its mark with the mark on the lens and twisting until it locks.

Removing the Lens

1. Ensure the camera is powered off.
2. Press and hold the lens release button on the camera body.
3. While holding the button, rotate the lens counter-clockwise until it detaches from the camera body.
4. Immediately attach the rear lens cap to the lens and the body cap to the camera to protect the internal components from dust and damage.

Operating the Lens

Focus Mode Switch (AF/MF)

Located on the side of the lens barrel (refer to Figure 3), this switch allows you to select between Autofocus (AF) and Manual Focus (MF) modes.

• AF (Autofocus): The camera automatically focuses on the subject. This mode is suitable for most general photography.
• MF (Manual Focus): You manually adjust the focus by rotating the focus ring. This mode is useful for precise focusing in specific situations, such as macro photography or astrophotography.

Manual Focus Ring

When in MF mode, rotate the large ring towards the front of the lens to adjust the focus. The focus distance scale, visible through a window on the lens barrel, indicates the current focus distance in both feet and meters.

Aperture (f/1.4)

This lens features a wide maximum aperture of f/1.4. This allows for:

• Excellent Low-Light Performance: More light can enter the lens, enabling photography in dimly lit environments without excessively high ISO settings.
• Shallow Depth of Field: Creates a blurred background (bokeh) to isolate your subject, which is ideal for portraits and artistic photography.

Minimum Focus Distance

The lens has a minimum focus distance of 7.1 inches (approximately 18 cm), allowing for close-up shots with a wide perspective.

Maintenance and Care

• Cleaning the Lens: Use a soft, lint-free cloth and a specialized lens cleaning solution to clean the front and rear elements. Avoid touching the glass surfaces with your fingers.
• Dust and Moisture: Always keep lens caps attached when the lens is not in use. Avoid exposing the lens to excessive dust, dirt, or moisture. If the lens gets wet, wipe it dry immediately with a soft cloth.
• Storage: Store the lens in a cool, dry place, away from direct sunlight and extreme temperatures. Use a lens case for protection during transport.
• Handling: Handle the lens carefully to avoid dropping or impacting it, which can damage internal optical elements or the mounting mechanism.

Troubleshooting

• Lens not recognized by camera: Ensure the lens is securely mounted and the camera is powered on. Clean the electronic contacts on both the lens and camera body with a clean, dry cloth.
• Autofocus not working: Check if the lens is set to AF mode. Ensure there is sufficient light and contrast for the autofocus system to operate effectively.
• Images are blurry: Verify that the lens is properly focused. If in AF mode, ensure the camera is focusing on the intended subject. If in MF mode, carefully adjust the focus ring. Check your camera's shutter speed to avoid motion blur.
• Dust spots on images: This may indicate dust on the camera sensor or the lens elements. Clean the lens elements as described in the Maintenance section. If the issue persists, consult your camera's manual for sensor cleaning procedures or seek professional service.

Specifications

Warranty and Support

For information regarding warranty coverage, service, or technical support, please refer to the warranty card included with your product or visit the official Sigma website. Keep your proof of purchase for warranty claims.