Sigma 40mm f/1.4 DG HSM Art Lens Instruction Manual

Introduction

This manual provides comprehensive instructions for the safe and effective use of your Sigma 40mm f/1.4 DG HSM Art lens. Designed to meet the demanding standards of professional cinematography, this lens offers exceptional optical performance for still photography. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

Safety Information

Always observe the following safety precautions to prevent damage to the lens or personal injury.

• Do not look at the sun or strong light sources through the lens, as this can cause severe eye damage.
• Keep the lens away from direct sunlight when not in use, especially the front element, as it can act as a magnifying glass and cause fire.
• Avoid exposing the lens to extreme temperatures, high humidity, or sudden temperature changes.
• Do not attempt to disassemble or modify the lens. Repairs should only be performed by authorized service personnel.
• Keep out of reach of children.
• Use only compatible camera bodies and accessories.

What's in the Box

Verify that all items are present upon unboxing:

• Sigma 40mm f/1.4 DG HSM Art Lens
• Lens Hood
• Lens Case
• Front Lens Cap
• Rear Lens Cap
• Instruction Manual (this document)

Product Overview

Familiarize yourself with the various parts of your Sigma 40mm f/1.4 DG HSM Art lens.

• Focus Ring: Used for manual focusing.
• Distance Scale: Indicates the current focus distance in meters and feet.
• Depth of Field Scale: Shows the approximate depth of field at various apertures.
• AF/MF Switch: Toggles between autofocus and manual focus modes.
• Lens Mount: Connects the lens to the camera body.
• Lens Hood Mount: Attachment point for the included lens hood.

Setup

Attaching the Lens

1. Ensure both the camera and 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 mark on the lens with the corresponding mark on the camera body.
4. Insert the lens into the camera's lens mount and rotate it clockwise (for Nikon F-mount) 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 hood mount and rotating 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. 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 sensor and lens elements from dust.

Operating the Lens

Autofocus (AF) and Manual Focus (MF)

• To use autofocus, set the AF/MF switch on the lens to "AF". The camera will then control the focus.
• To use manual focus, set the AF/MF switch on the lens to "MF". Rotate the focus ring on the lens to adjust focus manually.

Aperture Control

The aperture (f-number) controls the amount of light entering the lens and the depth of field. This lens features a maximum aperture of f/1.4, allowing for excellent low-light performance and shallow depth of field.

• Aperture is typically controlled via the camera body's settings. Refer to your camera's instruction manual for specific details on aperture control.
• The lens's distance scale also includes depth of field indicators for various apertures, providing a visual guide to the range of sharp focus.

Using the Lens Hood

The included lens hood is designed to block stray light from entering the lens, which can cause flare and ghosting. It also provides some physical protection for the front element.

• Attach the lens hood as described in the "Attaching the Lens" section.
• For storage, the lens hood can be reversed and mounted onto the lens.

Maintenance and Care

Proper care will ensure the longevity and optimal performance of your lens.

• Cleaning Lens Elements: Use a blower brush to remove dust. For smudges or fingerprints, use a soft, clean microfiber cloth specifically designed for optical lenses, along with a small amount of lens cleaning solution if necessary. Wipe gently in a circular motion from the center outwards.
• Cleaning the Lens Body: Use a soft, dry cloth to wipe the lens barrel. Do not use organic solvents like thinner or benzene.
• Storage: When not in use, store the lens with both front and rear caps attached in a cool, dry place, away from direct sunlight and high humidity. Consider using a desiccant to prevent mold growth, especially in humid environments.
• Transport: Always transport the lens in its protective case or a padded camera bag to prevent impacts and scratches.

Troubleshooting

If you encounter issues with your lens, refer to the following common problems and solutions:

If the problem persists after attempting these solutions, please contact Sigma customer support.

Specifications

Warranty and Support

Warranty Information

Sigma products are covered by a limited warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and product. Please retain your proof of purchase for warranty claims.

For detailed warranty information, please visit the official Sigma website for your region or contact your local authorized Sigma distributor.

Customer Support

If you require technical assistance, repair services, or have questions regarding your Sigma 40mm f/1.4 DG HSM Art lens, please contact Sigma customer support:

• Website: Visit the official Sigma Global Vision website for support resources, FAQs, and contact forms.
• Service Centers: Information on authorized service centers can be found on the Sigma website.

When contacting support, please have your lens model number (332955) and serial number ready.