Sigma 24mm f/1.4 DG HSM Art Lens (Model 401954) Instruction Manual

Invoering

Thank you for choosing the Sigma 24mm f/1.4 DG HSM Art Lens. This high-performance wide-angle prime lens is designed to deliver exceptional optical quality, making it suitable for a wide range of photographic applications, including landscape, architecture, and astrophotography. This manual provides essential information for the proper use, care, and maintenance of your lens.

Product voorbijview

The Sigma 24mm f/1.4 DG HSM Art Lens is part of Sigma's Global Vision Art line, known for its sophisticated optical design and high-level performance. Key features include:

• Groot diafragma: A bright f/1.4 maximum aperture excels in low-light conditions and provides extensive control over depth of field.
• Geavanceerd optisch ontwerp: Incorporates FLD and SLD glass elements to minimize chromatic aberrations and distortions, ensuring high sharpness and clarity.
• Hypersonische motor (HSM): Biedt snelle, stille en nauwkeurige autofocusprestaties.
• Super meerlaagse coating: Reduces flare and ghosting for improved contrast and color fidelity.
• Minimale focusafstand: Capable of focusing as close as 7.1 inches (18 cm) for dynamic close-up shots.

Figuur 1: Voorzijde view of the Sigma 24mm f/1.4 DG HSM Art Lens with its included lens hood.

Instellen

De lens op je camera bevestigen

1. Zorg ervoor dat zowel de camera als de lens schoon en stofvrij zijn.
2. Align the mounting index (red dot or white square) on the lens barrel with the corresponding index on your Canon EF mount camera body.
3. Rotate the lens clockwise until it clicks securely into place. Do not force the lens.

De lens losmaken

1. Houd de ontgrendelingsknop op de camera ingedrukt en draai de lens tegen de klok in tot hij stopt.
2. Verwijder voorzichtig de lens van de camerabody.
3. Attach the front and rear lens caps to protect the glass elements.

Figuur 2: Zijkant view of the lens, highlighting the AF/MF focus mode switch.

De lens bedienen

Schakelaar voor scherpstelmodus (AF/MF)

The lens features an AF/MF switch on its barrel. This switch allows you to select between autofocus (AF) and manual focus (MF) modes.

• AF (autofocus): Voor automatische scherpstelling. De Hyper Sonic Motor (HSM) zorgt voor een snelle en stille werking.
• MF (Handmatige scherpstelling): For manual focusing. Rotate the focus ring to adjust focus. This mode is often preferred for precise focusing in specialized applications like astrophotography.

Aperture Control

The aperture (f/1.4 to f/16) is controlled via your camera body. A wider aperture (smaller f-number) allows more light into the lens, ideal for low-light photography and creating shallow depth of field with pleasing background blur (bokeh). A narrower aperture (larger f-number) increases depth of field, suitable for landscapes.

Astrophotography Considerations

This lens is highly regarded for astrophotography due to its wide 24mm focal length and fast f/1.4 aperture. When shooting stars or the Milky Way:

• Set the lens to MF (Manual Focus).
• Focus to infinity. It is recommended to use your camera's Live View mode and zoom in on a bright star to achieve precise focus.
• Consider using a star tracker for longer exposures to prevent star trails.

Figuur 3: Boven view of the lens, showing the focus distance scale in feet and meters.

Onderhoud

De lens schoonmaken

• Use a soft, lint-free cloth or a lens brush to remove dust from the lens surface.
• For stubborn smudges, apply a small amount of lens cleaning solution to a microfiber cloth and gently wipe the lens in a circular motion.
• Gebruik nooit schurende materialen of agressieve chemicaliën.

Opslag

• Bevestig altijd de voorste en achterste lensdoppen wanneer u de lens niet gebruikt.
• Bewaar de lens op een koele, droge plaats, uit de buurt van direct zonlicht en extreme temperaturen.
• Als u de producten voor langere tijd opslaat, kunt u overwegen een luchtontvochtiger te gebruiken om schimmelgroei te voorkomen.

Probleemoplossing

Problemen met autofocus

If you experience inconsistent or inaccurate autofocus, consider the following:

• Firmware update: Sigma periodically releases firmware updates to improve lens performance. It is highly recommended to keep your lens firmware up to date. This often requires the Sigma USB Dock (sold separately) and Sigma Optimization Pro software.
• Focuskalibratie: Some camera bodies allow for in-camera micro-adjustment of autofocus. If you have a Sigma USB Dock, you can perform more precise calibration for different focus distances.
• Lichtomstandigheden: Autofocus performance can be affected by very low light or subjects with low contrast. Switch to manual focus if necessary.

Zorgen over de beeldkwaliteit

If images appear soft or lack expected sharpness:

• Controleer de focus: Ensure your subject is in sharp focus. In manual focus, verify using Live View vergroting.
• Opening: While the lens performs well wide open, stopping down by one or two stops (e.g., from f/1.4 to f/2.0 or f/2.8) can sometimes improve corner sharpness.
• Camerabeweging: Use a tripod or faster shutter speed to avoid blur from camera movement.

Specificaties

Garantie en ondersteuning

This Sigma lens is covered by a manufacturer's warranty. For specific warranty terms, registration, and support, please refer to the official Sigma website or contact Sigma customer service directly. Keep your proof of purchase for warranty claims.

For technical assistance, firmware updates, or service, please visit the Sigma Global Vision webplaats or consult your local authorized Sigma dealer.