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

Okwu mmalite

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.

Ngwaahịa gafereview

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:

• Large Aperture: A bright f/1.4 maximum aperture excels in low-light conditions and provides extensive control over depth of field.
• Advanced Optical Design: Incorporates FLD and SLD glass elements to minimize chromatic aberrations and distortions, ensuring high sharpness and clarity.
• Hyper Sonic Motor (HSM): Provides fast, quiet, and accurate autofocus performance.
• Super Multi-Layer Coating: Reduces flare and ghosting for improved contrast and color fidelity.
• Ogologo anya kacha nta: Capable of focusing as close as 7.1 inches (18 cm) for dynamic close-up shots.

Foto 1: N'ihu view of the Sigma 24mm f/1.4 DG HSM Art Lens with its included lens hood.

Melite

Attaching the Lens to Your Camera

1. Ensure both the camera and lens are clean and free of dust.
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.

Iwepụ oghere

1. While holding down the lens release button on your camera body, rotate the lens counter-clockwise until it stops.
2. Carefully remove the lens from the camera body.
3. Attach the front and rear lens caps to protect the glass elements.

Foto 2: Akụkụ view of the lens, highlighting the AF/MF focus mode switch.

Ịrụ ọrụ Lens

Mgbanwe Ụdị Nlekwasị Anya (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 (Nlekwasị anya onwe): For automatic focusing. The Hyper Sonic Motor (HSM) provides fast and quiet operation.
• MF (Nlebara anya aka): For manual focusing. Rotate the focus ring to adjust focus. This mode is often preferred for precise focusing in specialized applications like astrophotography.

Njikwa oghere

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.

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

Nlekọta

Na-ehicha oghere

• 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.
• Ejila ihe ndị na-emebi emebi ma ọ bụ kemịkal siri ike mee ihe.

Nchekwa

• Na-etinye mkpuchi lensi n'ihu na n'azụ mgbe ọ bụla a naghị eji lensi ahụ.
• Debe lenzi ahụ n'ebe dị jụụ ma kpọọ nkụ, ebe anwụ na-anaghị anwụ kpọmkwem na oke okpomọkụ dị oke njọ.
• If storing for extended periods, consider using a dehumidifying agent to prevent mold growth.

Nchọpụta nsogbu

Okwu mgbado anya

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

• Femụwe 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.
• Ndozi lekwasịrị anya: 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.
• Ọnọdụ ọkụ: Autofocus performance can be affected by very low light or subjects with low contrast. Switch to manual focus if necessary.

Nchegbu ogo onyonyo

If images appear soft or lack expected sharpness:

• Lelee Nleba Anya: Ensure your subject is in sharp focus. In manual focus, verify using Live View ibuli elu.
• oghere: 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.
• Camera Shake: Use a tripod or faster shutter speed to avoid blur from camera movement.

Nkọwapụta

Akwụkwọ ikike na nkwado

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 websaịtị or consult your local authorized Sigma dealer.