Introducció
This manual provides essential information for the proper use and care of your Pentax SMC DA* 55mm f/1.4 SDM Prime Standard Lens. This high-performance lens is designed for Pentax Digital SLR Cameras, offering exceptional image quality with its advanced optical elements and coatings. It features a fast f/1.4 aperture, weather-resistant construction, and a Supersonic Direct-drive Motor (SDM) for quiet and precise autofocus.
Configuració
Col·locació de la lent
- Assegureu-vos que tant la càmera com l'objectiu estiguin apagats.
- Traieu la tapa de la lent posterior i la tapa del cos de la càmera.
- Align the red mounting index mark on the lens barrel with the corresponding mark on the camera body.
- Introduïu l'objectiu a la muntura de la càmera i gireu-lo en sentit horari fins que encaixi. No forceu l'objectiu.
Desmuntant la lent
- Assegureu-vos que la càmera estigui apagada.
- Mentre premeu el botó d'alliberament de l'objectiu del cos de la càmera, gireu l'objectiu en sentit antihorari fins que s'aturi.
- Carefully remove the lens from the camera body.
- Attach the rear lens cap to the lens and the body cap to the camera to protect them from dust and damage.
Attaching the Lens Hood and Cap
The PH-RBH lens hood is designed to reduce flare and protect the front element. Align the hood with the front of the lens and twist until it locks securely. The O-LC58 objective cap protects the front element when the lens is not in use.
Imatge: Anglesa view of the Pentax SMC DA* 55mm f/1.4 SDM lens, showing the focus ring, AF/MF switch, and distance scale.
Funcionament de la lent
Centrant-se
- Enfocament automàtic (AF): Set the AF/MF switch on the lens to 'AF'. The lens utilizes a Supersonic Direct-drive Motor (SDM) for quiet and fast autofocus.
- Enfocament manual (MF): Set the AF/MF switch on the lens to 'MF'. Rotate the focus ring to adjust focus manually.
- Quick-Shift Focus System: This system allows for instant switching between autofocus and manual focus without changing the AF/MF switch position on the lens, provided the camera body supports this feature. After autofocus has locked, you can fine-tune focus manually by rotating the focus ring.
Control d'obertura
The lens features a fast maximum aperture of f/1.4, allowing for excellent low-light performance and shallow depth-of-field effects. The aperture can be stopped down to f/22. The 9 rounded diaphragm blades contribute to a smooth, circular bokeh (background blur) at wider apertures. Aperture control is fully automatic and managed through the camera body.
Construcció resistent a la intempèrie
The lens is equipped with a water- and dust-resistant seal, providing reliable operation in challenging environmental conditions. While resistant, it is not waterproof; avoid submerging the lens in water.
Imatge: Frontal view of the Pentax SMC DA* 55mm f/1.4 SDM lens, highlighting the distance scale and AF/MF switch.
Manteniment
Neteja de la lent
- Elements de la lent: The objective lens surface is treated with Pentax's Super Protect (SP) coating, a fluorine compound that repels dust, water, and grease. For cleaning, use a soft, clean lens cloth. For stubborn smudges, use a specialized lens cleaning solution applied to the cloth, not directly to the lens.
- Cos de la lent: Wipe the lens body with a soft, dry cloth. Do not use organic solvents like paint thinner or benzene.
- Pols: Feu servir un raspall de bufador per eliminar la pols de la superfície de la lent.
Emmagatzematge
When not in use, store the lens with both front and rear caps attached in a cool, dry place away from direct sunlight and extreme temperatures. Avoid storing the lens in areas with high humidity to prevent mold growth.
Resolució de problemes
- L'enfocament automàtic és lent o imprecís:
Ensure the AF/MF switch on the lens is set to 'AF' and the camera body is also set to autofocus. Check lighting conditions; very low light can affect AF performance. If issues persist, try cleaning the lens and camera contacts. Some users have reported inconsistent SDM performance; if this occurs, contact Pentax customer support.
- Image quality is soft or blurry:
Verify that the lens is properly focused. Check your camera's shutter speed to avoid motion blur, especially in low light. Ensure the aperture setting is appropriate for your desired depth of field. Clean lens elements if smudges are present. If softness persists across all settings, the lens may require servicing.
- Lent no reconeguda per la càmera:
Ensure the lens is securely mounted to the camera body. Clean the electronic contacts on both the lens mount and camera body with a clean, dry cloth. Power cycle the camera.
Especificacions
| Característica | Detall |
|---|---|
| Distància focal | 55mm (equivalent to 84.5mm in 35mm format) |
| Apertura màxima | f/1.4 |
| Obertura mínima | f/22 |
| Construcció de lents | 9 elements in 8 groups (including ED optical elements) |
| Angle de View | 28.6 degrees (with Pentax DSLR) |
| Pales de diafragma | 9 (arrodonit) |
| Distància mínima d'enfocament | 1.48 peus (0.45 metres) |
| Ampliació màxima | 0.173x |
| Diàmetre del filtre | 58 mm |
| Diaphragm Control | Totalment automàtic |
| Parasol de l'objectiu | PH-RBH (included) |
| Muntanya | Pentax KAF3 |
| Cap objectiu | O-LC58 (included) |
| Cas | S90-100 (included) |
| Dimensions (Diàmetre x Longitud) | 2.8 polzades x 2.6 polzades (71 mm x 66 mm) |
| Pes | 13.2 unces (374 grams) |
Garantia i Suport
This Pentax lens typically comes with a garantia limitada d'un any from the date of purchase. Please refer to the warranty card included with your product for specific terms and conditions. For technical support, service, or warranty claims, please contact Pentax customer service or visit the official Pentax weblloc web per a la teva regió. Conserva el comprovant de compra per validar la garantia.