1. Introduction
This manual provides detailed instructions for the proper use and care of your Sigma 35mm F1.4 Art DG HSM Lens for Canon. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.
The Sigma 35mm F1.4 Art DG HSM Lens is designed for Canon EF mount cameras, offering a wide 35mm focal length and a fast F1.4 maximum aperture. It features a Hypersonic Motor (HSM) for quiet and fast autofocus, and an inner focusing system for consistent optical performance across all focusing distances.
Figure 1: Front view of the Sigma 35mm F1.4 Art DG HSM Lens. This image displays the lens barrel, focus ring, and aperture markings.
2. Setup
2.1 Attaching the Lens
- Remove the rear lens cap and camera body cap.
- Align the mounting index mark on the lens with the corresponding mark on the camera body.
- Insert the lens into the camera mount and turn it clockwise until it clicks into place.
Figure 2: The Sigma 35mm F1.4 Art DG HSM Lens properly attached to a DSLR camera body.
2.2 Removing the Lens
- Press and hold the lens release button on the camera body.
- Turn the lens counter-clockwise until it stops.
- Carefully remove the lens from the camera body.
- Attach the rear lens cap to protect the lens elements.
2.3 Attaching the Lens Hood (LH730-03)
The included lens hood helps to block extraneous light and protect the front of the lens. Align the red dot on the lens hood with the mark on the front of the lens, then turn the hood clockwise until it locks into place.
Figure 3: The Sigma 35mm F1.4 Art DG HSM Lens with its dedicated lens hood (LH730-03) attached.
3. Operating the Lens
3.1 Focus Mode Switch (AF/MF)
The lens features an AF/MF switch on its barrel to select between Autofocus and Manual Focus modes.
- AF (Autofocus): For automatic focusing. The camera will control the focus.
- MF (Manual Focus): For manual focusing. Rotate the focus ring to adjust focus.
Figure 4: Detail of the AF/MF switch located on the side of the lens barrel, allowing selection between autofocus and manual focus.
3.2 Aperture Control
The lens has a maximum aperture of F1.4 and a minimum aperture of F16. Aperture is controlled via the camera body. A wider aperture (smaller f-number) allows more light and creates a shallower depth of field, while a narrower aperture (larger f-number) allows less light and creates a greater depth of field.
3.3 Focusing Distance
The minimum focusing distance for this lens is 30 cm (11.8 inches). This allows for close-up photography while maintaining sharp detail.
Figure 5: The lens displaying its focus distance scale in both feet and meters, along with aperture markings.
4. Maintenance and Care
4.1 Cleaning the Lens
To clean the lens surfaces, use a lens blower to remove dust, then gently wipe with a clean, soft lens cloth. For stubborn smudges, use a small amount of lens cleaning fluid applied to the cloth, not directly to the lens.
Figure 6: Example of a lens cleaning kit, typically including a blower, brush, and microfiber cloths, essential for proper lens maintenance.
4.2 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 extreme temperatures. The included carrying case provides additional protection.
4.3 Handling Precautions
- Avoid exposing the lens to sudden temperature changes, which can cause condensation.
- Do not touch the lens elements directly with your fingers.
- Protect the lens from strong impacts or vibrations.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lens not focusing (AF) | AF/MF switch set to MF; insufficient light; dirty lens contacts. | Set switch to AF; ensure adequate lighting; clean lens and camera contacts. |
| Image appears blurry | Incorrect focus; camera shake; dirty lens elements. | Re-focus carefully; use a faster shutter speed or tripod; clean lens. |
| Lens not recognized by camera | Improperly mounted lens; dirty electrical contacts. | Re-attach lens securely; clean lens and camera contacts. |
6. Specifications
| Model Number | 340954 |
| Lens Construction | 13 Elements in 11 Groups |
| Angle of View | 63.4 degrees |
| Number of Diaphragm Blades | 9 (rounded diaphragm) |
| Maximum Aperture | F1.4 |
| Minimum Aperture | F16 |
| Minimum Focusing Distance | 30 cm (11.8 inches) |
| Filter Size | 67mm |
| Dimensions (Diameter x Length) | 3.03 x 3.7 inches (77 x 94 mm) |
| Weight | 1.47 pounds (665 grams) |
| Mount Type | Canon EF |
| Included Accessories | Lens Hood (LH730-03), Carrying Case |
Note: Specifications are subject to change without notice.
7. Customer Support and Warranty
7.1 Warranty Information
This product is covered by a manufacturer's warranty. Please refer to the warranty card included with your purchase or visit the official Sigma website for detailed warranty terms and conditions specific to your region. Keep your proof of purchase for warranty claims.
7.2 Contacting Support
For technical assistance, service, or further inquiries, please contact Sigma customer support. Contact details can typically be found on the official Sigma website or in the packaging materials.
Online Resources: www.sigma-global.com