1. Introducción
Gracias por la compraasing the Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro Lens. This versatile zoom lens is designed for Konica Minolta SLR cameras, offering a broad focal range from wide-angle to telephoto, along with macro capabilities. Its Aspherical and Internal Focusing (IF) design contributes to high optical performance and convenient operation. This manual provides essential information for the proper use, care, and maintenance of your lens.
2. Configuración
2.1 Colocación de la lente
- Asegúrese de que tanto la cámara como la lente estén apagadas.
- Retire la tapa trasera de la lente y la tapa del cuerpo de la cámara.
- Align the mounting index (red dot) on the lens barrel with the mounting index on the camera body.
- Inserte el objetivo en la montura de la cámara y gírelo en sentido horario hasta que encaje. No lo fuerce.

2.2 Extracción de la lente
- Asegúrese de que la cámara esté apagada.
- Mientras presiona el botón de liberación de la lente en el cuerpo de la cámara, gire la lente en sentido antihorario hasta que se detenga.
- Retire con cuidado la lente del cuerpo de la cámara.
- Coloque la tapa trasera de la lente en la lente y la tapa del cuerpo en la cámara para protegerlos del polvo y daños.
2.3 Colocación del parasol
A lens hood (if supplied) helps to block extraneous light, reducing flare and ghosting. Align the lens hood with the front of the lens and turn it clockwise until it locks into position. To remove, turn it counter-clockwise.

3. Operación de la lente
3.1 Zoom
To change the focal length, rotate the zoom ring on the lens barrel. The focal length markings (28mm, 35mm, 50mm, 70mm, 100mm, 135mm) are indicated on the ring. Rotate towards 28mm for a wider angle of view and towards 135mm for a telephoto perspective.

3.2 Enfoque
This lens features both autofocus (AF) and manual focus (MF) capabilities. The Internal Focusing (IF) system ensures that the front of the lens does not rotate during focusing, which is beneficial when using polarizing filters.
- Enfoque automático (AF): Set the AF/MF switch on the lens (if present) or camera body to 'AF'. The camera will automatically focus when the shutter button is half-pressed.
- Enfoque manual (MF): Set the AF/MF switch to 'MF'. Rotate the focus ring on the lens barrel until the subject appears sharp in the viewdescubridor.
3.3 Función Macro
The lens offers a macro function for close-up photography. To engage the macro mode, typically you would zoom to the telephoto end (135mm) and then activate the macro switch or ring if available on the lens. Refer to your camera's manual for specific settings related to macro photography.

3.4 Control de apertura
The aperture (f/3.8-5.6) is controlled electronically by the camera body. Select your desired aperture setting through your camera's controls. The lens will communicate with the camera to set the appropriate aperture value.
4. Mantenimiento
4.1 Limpieza de la lente
- Elementos de la lente: Use a lens blower brush to remove dust. For smudges or fingerprints, use a clean, soft lens cloth and a small amount of lens cleaning fluid. Apply fluid to the cloth, not directly to the lens. Wipe gently in a circular motion from the center outwards.
- Cuerpo del objetivo: Limpie el cuerpo de la lente con un paño suave y seco. No utilice disolventes orgánicos como diluyente de pintura o benceno.
4.2 Almacenamiento
- Store the lens with 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. If storing for extended periods, consider using a desiccant.
4.3 Precauciones de manipulación
- Evite dejar caer o someter la lente a impactos fuertes.
- Do not leave the lens in direct sunlight for prolonged periods, as this can damage internal components.
- Mantenga la lente alejada de campos magnéticos fuertes.
5. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La lente no se fija a la cámara | Alineación incorrecta; obstrucción | Ensure red dots are aligned; check for debris in mount. |
| El enfoque automático no funciona | AF/MF switch set to MF; insufficient light; dirty contacts | Set switch to AF; use flash or brighter conditions; clean lens and camera contacts. |
| Las imágenes están borrosas | Incorrect focus; camera shake; dirty lens element | Check focus mode and focus point; use a faster shutter speed or tripod; clean lens. |
| Zoom ring is stiff | Dust or debris; lack of lubrication | Clean exterior; if problem persists, professional service may be required. |
If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact Sigma customer support or a qualified service technician.
6. Especificaciones
| Característica | Descripción |
|---|---|
| Número de modelo | 709-205 |
| Longitud focal | 28-135 mm |
| Apertura máxima | F/3.8-5.6 |
| Tipo de lente | Zoom, Macro |
| Tipo de montaje | Konica Minolta SLR |
| Diseño óptico | Aspherical, Internal Focusing (IF) |
| Tamaño del filtro | 62 mm |
| Distancia mínima de enfoque | Not specified (typical for macro lenses, often around 0.5m or less) |
| Dimensiones (paquete) | 6 x 4.5 x 4.5 pulgadas |
| Peso del artículo | 14.5 onzas |
| Fabricante | Corporación Sigma de América |
7. Información de garantía
Warranty terms and conditions for the Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro Lens are typically provided at the time of purchase or can be found on the official Sigma Corporation of America website. Please retain your proof of purchase for warranty claims. The warranty generally covers manufacturing defects for a specified period from the date of purchase. It does not cover damage caused by misuse, accidents, unauthorized repairs, or normal wear and tear.
8. Atención al cliente
For technical assistance, service, or inquiries regarding your Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro Lens, please contact Sigma Corporation of America directly. Contact information, including phone numbers and website details, can usually be found on their official websitio o en la documentación incluida con su producto.





