1. Introducció
This manual provides comprehensive instructions for the safe and effective use of your Sigma 70-300mm f/4-5.6 DG Macro Telephoto Zoom Lens. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.
2. Producte acabatview
The Sigma 70-300mm f/4-5.6 DG Macro Lens is a versatile telephoto zoom lens designed for use with digital SLR cameras, particularly Canon SLR models. It offers a broad focal length range suitable for various photographic applications, including portraits, sports, and nature photography. A key feature is its macro photography capability, allowing for close-up magnification.
Característiques principals:
- Optimized for use with digital SLR cameras.
- Multi-layer lens coating and lens design to reduce flare and ghosting.
- Minimum focusing distance of 59 inches (1.5 meters) at all zoom settings.
- Features 14 lens elements in 10 groups for optical clarity.
- High-performance lens ideal for portraits, sports photography, and nature photography.
- Macro photography capability with 1:2 maximum close-up magnification at 300mm focal length.
Figure 2.1: The Sigma 70-300mm f/4-5.6 DG Macro Telephoto Zoom Lens. This image displays the lens from a slightly elevated angle, showcasing its barrel, zoom ring, focus ring, and the Sigma DG branding.
3. Configuració
3.1 Fixació de l'objectiu a la càmera
- Ensure your camera is turned off before attaching or detaching any lens.
- Remove the rear lens cap from the Sigma lens and the body cap from your camera.
- Align the mounting index (usually a red or white dot) on the lens barrel with the corresponding index on your camera's lens mount.
- Insert the lens into the camera mount and rotate it clockwise (for Canon EF mount) until it clicks securely into place. Do not force the lens.
- Replace the front lens cap when the lens is not in use to protect the front element.
3.2 Desmuntatge de la lent
- Apagueu la càmera.
- Mentre premeu el botó d'alliberament de l'objectiu del cos de la càmera, gireu l'objectiu en sentit antihorari fins que es desenganxi.
- Immediately attach the rear lens cap to the lens and the body cap to your camera to protect the internal components from dust and damage.
Figure 3.1: A user operating a Canon EOS Rebel camera with the Sigma 70-300mm lens attached, demonstrating typical usage. The lens is extended to a telephoto focal length, and the camera is mounted on a small tripod.
4. Instruccions de funcionament
4.1 Ampliació
To adjust the focal length, rotate the zoom ring located on the lens barrel. The lens covers a range from 70mm (wide-angle telephoto) to 300mm (super telephoto). Rotate towards 300mm to magnify distant subjects and towards 70mm to widen your field of view.
4.2 Enfocament
The lens supports both autofocus (AF) and manual focus (MF).
- Enfocament automàtic (AF): Set the AF/MF switch on the lens barrel to 'AF'. The camera will automatically focus on your subject when the shutter button is half-pressed.
- Enfocament manual (MF): Set the AF/MF switch on the lens barrel to 'MF'. Rotate the focus ring on the lens barrel until your subject appears sharp in the viewfinder or on the camera's LCD screen.
4.3 Macro Photography
This lens features a dedicated macro mode for close-up photography. To engage macro mode:
- Set the focal length between 200mm and 300mm.
- Locate the 'MACRO' switch on the lens barrel. Slide this switch to the 'MACRO' position.
- In macro mode, the lens can achieve a maximum close-up magnification of 1:2 at 300mm. The minimum focusing distance remains 59 inches (1.5 meters), but the magnification changes based on the focal length within the 200-300mm range.
- To exit macro mode, slide the switch back to the normal position. Ensure the focus ring is not at its extreme macro extension before switching back.
4.4 Aperture Settings
The lens has a variable aperture of f/4-5.6, meaning the maximum aperture changes with the focal length (f/4 at 70mm, f/5.6 at 300mm). The camera will automatically adjust the aperture based on your selected shooting mode (e.g., Aperture Priority, Program, Manual).
5. Manteniment
5.1 Neteja de la lent
- Elements de la lent: Use a lens blower brush to remove dust and loose particles. For smudges or fingerprints, use a clean, soft microfiber lens cloth and a small amount of lens cleaning solution specifically designed for optical surfaces. Apply solution to the cloth, not directly to the lens.
- Cos de la lent: Wipe the lens barrel with a soft, dry cloth. Do not use harsh chemicals or solvents.
- Eviteu tocar els elements de vidre amb els dits.
5.2 Emmagatzematge
- Always attach the front and rear lens caps when storing the lens.
- Guardeu la lent en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Si l'emmagatzemeu durant períodes prolongats, considereu l'ús d'un agent deshumidificant per evitar el creixement de floridura.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Autofocus is slow or hunts excessively. | Low light conditions, low contrast subject, camera settings, or lens motor characteristics. | Increase ambient light, focus on a high-contrast edge, check camera's AF mode, or switch to manual focus (MF) for precise control. |
| Les imatges apareixen suaus o desenfocades. | Camera shake, incorrect focus, dirty lens elements, or shooting at wide-open aperture (f/4-5.6) at 300mm. | Use a faster shutter speed, tripod, or image stabilization (if available on camera body). Ensure proper focus. Clean lens. Try stopping down the aperture to f/6.3 or f/7.1, especially at 300mm, to improve sharpness and reduce chromatic aberration. |
| Chromatic aberration (color fringing) visible. | Common with telephoto lenses, especially at wide apertures and high contrast areas. | Stop down the aperture (e.g., to f/6.3 or f/7.1). Post-processing software can often correct chromatic aberration. |
| Cannot engage macro mode. | Focal length not within 200-300mm range. | Adjust the zoom ring to a focal length between 200mm and 300mm before attempting to slide the macro switch. |
7. Especificacions
| Número de model | 509101 |
| Distància focal | 70-300 mm |
| Apertura màxima | f/4-5.6 |
| Construcció de lents | 14 elements en 10 grups |
| Distància mínima d'enfocament | 59 polzades (1.5 metres) |
| Maximum Macro Magnification | 1:2 (at 300mm focal length) |
| Muntatges compatibles | Cànon EF |
| Dimensions del producte | 4.8 x 3.03 x 3.03 polzades |
| Pes de l'article | 1.21 lliures |
| Fabricant | Sigma Corporation of America |
Figure 7.1: Diagram illustrating the approximate dimensions of the Sigma 70-300mm lens, showing a length of 5.3 inches (13 cm).
8. Garantia i Suport
8.1 Exempció de responsabilitat legal
This product may be subject to a legal disclaimer. For specific warranty information, please refer to the documentation provided with your purchase or contact Sigma Corporation of America directly. Some products may come with a 90-day parts and labor warranty and a 14-day satisfaction guarantee, as indicated by specific sellers.
8.2 Contacte del fabricant
For technical support, service, or warranty claims, please contact Sigma Corporation of America. Refer to their official weblloc web per obtenir la informació de contacte més actualitzada.
