Introducció
The Canon EF 70-200mm f/4L USM AF Lens is a high-performance, L-series telephoto zoom lens designed for Canon SLR cameras. This lens is engineered to capture distant action, intimate portraits, and various subjects with exceptional clarity and detail. Its robust construction and advanced optical design make it a versatile tool for both amateur and professional photographers.
Key features include a constant f/4 maximum aperture, an inner focusing system, and a ring-type Ultra-Sonic Motor (USM) for fast and quiet autofocusing. The lens also allows for the use of circular polarizing filters without front element rotation during focusing, enhancing creative control.
Què hi ha a la caixa
Verify that all the following items are included with your Canon EF 70-200mm f/4L USM AF Lens:
- Canon EF 70-200mm f/4L USM AF Lens
- E-67U 67mm Snap-On Lens Cap
- Tapa de pols de l'objectiu E (posterior)
- ET-74 Lens Hood
- LP1224 Lens Case
Configuració
Col·locació de la lent
- Assegureu-vos que la càmera estigui apagada.
- Align the red index mark on the lens with the red index mark on your camera's lens mount.
- Gireu la lent en sentit horari fins que encaixi al seu lloc.
Attaching the Lens Hood (ET-74)
Align the red dot on the lens hood with the red dot on the front of the lens. Rotate the hood clockwise until it locks securely. The lens hood helps to prevent stray light from entering the lens and causing flare, and also offers some physical protection.
Using the Tripod Collar (Sold Separately)
For extended use or when using a tripod, a tripod collar (compatible with the EF 300mm f/4L USM lens) is recommended. This accessory attaches to the lens barrel, allowing you to mount the lens directly to a tripod or monopod. This helps to balance the camera and lens assembly, reducing strain on the camera's lens mount and improving stability for sharper images, especially at longer focal lengths.
Funcionament de la lent
Interruptor de mode d'enfocament (AF/MF)
Locate the AF/MF switch on the side of the lens. Set it to AF for autofocus operation or MF for manual focus. In AF mode, the ring-type USM provides quick and quiet focusing. Full-time manual focus override is available even in AF mode, allowing for fine adjustments after autofocus has been achieved.
Focal Length Adjustment (Zoom)
Rotate the zoom ring to adjust the focal length between 70mm and 200mm. This allows you to frame your subject precisely without physically moving closer or further away. The rotating type zoom system ensures smooth and consistent operation.
Configuració de l'obertura
This lens features a constant maximum aperture of f/4.0 across its entire zoom range. This allows for consistent exposure settings and depth of field control regardless of the focal length selected. A wider aperture (lower f-number) creates a shallower depth of field, effectively blurring the background and making your subject stand out.
Ús de filtres
The lens accepts 67mm filters. Attach filters to the front thread of the lens. The inner focusing system ensures that the front lens element does not rotate during focusing, which is particularly convenient when using polarizing or graduated neutral density filters.
Manteniment
Neteja de la lent
- Use a blower brush to remove dust and loose particles from the lens surfaces.
- For smudges or fingerprints, use a clean microfiber cloth specifically designed for optics, along with a lens cleaning solution. Apply the solution to the cloth, not directly to the lens.
- Clean the lens body with a soft, dry cloth.
Emmagatzematge
Store the lens in a cool, dry, and well-ventilated area away from direct sunlight and high humidity. Always attach the front and rear lens caps when storing to protect the optical elements. If storing for an extended period, consider using a desiccant to prevent mold growth.
Resolució de problemes
Problemes comuns
- Imatges borroses: Check focus mode (AF/MF), ensure proper shutter speed for the focal length, and verify camera stability.
- L'enfocament automàtic no funciona: Ensure the AF/MF switch is set to AF. Check if the lens is properly mounted to the camera. Verify camera settings for autofocus.
- Dust on Sensor/Lens: Use a blower to remove dust. If dust persists on the sensor, professional cleaning may be required.
For further assistance, refer to the detailed troubleshooting section in your camera's instruction manual or contact Canon customer support.
Especificacions
| Característica | Especificació |
|---|---|
| Marca | Cànon |
| Nom del model | Canon 70-200mm F4.0 L USM AF Lens |
| Número de model | 2578A002 |
| Distància focal | 70-200 mm |
| Apertura màxima | f/4.0 |
| Construcció de lents | 16 elements en 13 grups |
| Ajust del focus | Inner focusing system with USM |
| Distància d'enfocament més propera | 3.9 peus |
| Mida del filtre | 67 mm |
| Dimensions (Diàmetre x Longitud) | 3.0 polzades x 6.8 polzades |
| Pes | 25 unces (aprox. 709 g) |
| Muntatges compatibles | Cànon EF |
| Estabilització d'imatge | Optical (Note: This specific model does not include IS, but the specification data indicates 'Optical' generally for the lens type. Please refer to product description for exact model features.) |
Garantia
This Canon EF 70-200mm f/4L USM AF Lens comes with a 1 any de garantia covering both labor and parts. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the warranty card included with your product or visit the official Canon weblloc.
Suport
For additional support, product registration, software downloads, or service inquiries, please visit the official Canon website or contact Canon customer service directly.
Oficial de Canon Weblloc: www.usa.canon.com
For a comprehensive range of Canon products and accessories, you can also visit the Botiga Canon a Amazon.