Sigma 50-150mm f/2.8 EX DC HSM II Zoom Lens Instruction Manual

Introduction

This manual provides essential instructions for the safe and effective use of your Sigma 50-150mm f/2.8 EX DC HSM II Zoom Lens. Designed exclusively for digital SLR cameras with APS-C size sensors, this telephoto zoom lens offers a constant large aperture of F2.8, making it suitable for various photographic applications, including low-light conditions and creative depth-of-field control. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.

Consignes de sécurité

• Ne regardez pas le soleil ou les sources de lumière intense à travers la lentille, car cela peut causer des dommages permanents à la vision.
• Keep the lens away from direct sunlight when not in use to prevent fire hazards from concentrated light.
• Évitez d'exposer l'objectif à des températures extrêmes, à une forte humidité ou à des produits chimiques corrosifs.
• Handle the lens with care. Dropping or subjecting it to strong impacts can cause internal damage.
• Tenir hors de portée des enfants.

Identification des pièces

Familiarize yourself with the various components of your lens:

• Monture d'objectif : Permet de relier l'objectif au boîtier de l'appareil photo.
• Bague de mise au point : Utilisé pour la mise au point manuelle.
• Bague de zoom : Used to adjust the focal length.
• Focus Mode Switch: Permet de basculer entre la mise au point automatique (AF) et la mise au point manuelle (MF).
• Support de pare-soleil : Where the lens hood attaches.
• Bouchon d'objectif avant : Protects the front element.
• Rear Lens Cap: Protège la lentille arrière et la monture d'objectif.

Figure 1 : Sigma 50-150mm f/2.8 EX DC HSM II Zoom Lens. This image displays the lens from a slightly angled perspective, showcasing its compact telephoto design, the zoom and focus rings, and the overall build.

Installation

Fixation de l'objectif à l'appareil photo

1. Assurez-vous que l'appareil photo et l'objectif sont éteints.
2. Retirez le bouchon arrière de l'objectif et le bouchon du boîtier de l'appareil photo.
3. Align the mounting index marks (usually a white dot or line) 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 into place. Do not force the lens.
5. To detach, press the lens release button on the camera body and rotate the lens counter-clockwise until it detaches.

Fixation du pare-soleil

The included lens hood helps to block extraneous light, reducing flare and ghosting. Align the mark on the lens hood with the mark on the front of the lens and rotate it clockwise until it locks securely. For storage, the lens hood can be reversed and attached to the lens.

Utilisation de l'objectif

Se concentrer

• Mise au point automatique (AF) : Set the focus mode switch on the lens (if present) or camera to AF. The Hyper Sonic Motor (HSM) provides quiet and high-speed autofocusing.
• Mise au point manuelle (MF) : Set the focus mode switch to MF. Rotate the focus ring to achieve sharp focus. This lens also features full-time manual focus override, allowing you to fine-tune focus manually even when in AF mode by simply rotating the focusing ring.

Zoom

Rotate the zoom ring to adjust the focal length between 50mm and 150mm. The lens features an inner zooming system, meaning the overall length of the lens does not change during zooming.

Paramètres d'ouverture

This lens maintains a constant maximum aperture of F2.8 throughout its entire zoom range. This allows for consistent exposure and depth-of-field control regardless of the focal length selected. The minimum aperture is F22.

Using with Tele-Converters

This lens is compatible with Sigma 1.4x EX DG and 2x EX DG APO Tele-Converters, extending its focal length capabilities. Refer to the tele-converter's instruction manual for proper attachment and usage.

Entretien

Nettoyage de l'objectif

• Utilisez une brosse soufflante pour enlever la poussière de la surface de la lentille.
• For smudges or fingerprints, use a clean, soft lens cloth specifically designed for optical surfaces, along with a small amount of lens cleaning fluid. Apply the fluid to the cloth, not directly to the lens.
• N’utilisez jamais de solvants organiques comme du diluant à peinture ou du benzène pour nettoyer la lentille.

Stockage

• Lorsqu'ils ne sont pas utilisés, remettez en place les capuchons d'objectif avant et arrière.
• Conservez la lentille dans un endroit frais et sec, à l'abri de la lumière directe du soleil et d'une forte humidité.
• En cas de stockage prolongé, il est conseillé d'utiliser un dessiccant pour éviter la formation de moisissures.

Précautions de manipulation

This lens is a precision optical instrument. Avoid dropping it or subjecting it to strong vibrations or impacts. While robust, severe physical shock can affect its internal components and optical alignment.

Dépannage

If problems persist after attempting these solutions, please contact Sigma customer support or a qualified service technician.

Caractéristiques

Garantie et assistance

Warranty information for your Sigma lens is typically provided with the product at the time of purchase. Please refer to the warranty card or documentation included in your lens packaging for details regarding coverage, terms, and conditions. For technical support, service, or inquiries about your lens, please contact Sigma Corporation directly through their official websites ou canaux de service client.