Sigma 28-70mm F2.8 EX Aspherical Lens for Canon-AF Camera User Manual

Uvod

This manual provides essential instructions for the proper use and care of your Sigma 28-70mm F2.8 EX Aspherical Lens, designed specifically for Canon-AF SLR cameras. This lens offers a versatile focal range and a constant f/2.8 maximum aperture, making it suitable for various photographic situations. Please read this manual thoroughly before using the lens to ensure optimal performance and longevity.

Figure 1: Sigma 28-70mm F2.8 EX Aspherical Lens. This image illustrates the overall appearance of the lens.

Nastavitev

Pritrditev objektiva

1. Prepričajte se, da sta tako fotoaparat kot objektiv čista in brez prahu.
2. Odstranite zadnji pokrovček objektiva z objektiva in pokrovček ohišja s fotoaparata.
3. Align the mounting index (usually a red dot or white line) on the lens barrel with the corresponding index on the camera body.
4. Vstavite objektiv v bajonet fotoaparata in ga zavrtite v smeri urinega kazalca, dokler se ne zaskoči. Ne pritiskajte na objektiv na silo.

Figure 2: Illustrative image of a lens being attached to a camera body. Ensure alignment marks are matched before rotating.

Odstranjevanje leče

1. Izklopi kamero.
2. Medtem ko držite pritisnjen gumb za sprostitev objektiva na ohišju fotoaparata, zavrtite objektiv v nasprotni smeri urinega kazalca, dokler se ne ustavi.
3. Previdno odstranite objektiv z nosilca fotoaparata.
4. Za zaščito senzorja in elementov objektiva namestite zadnji pokrovček objektiva na objektiv in pokrovček ohišja na fotoaparat.

Upravljanje objektiva

Osredotočanje

This lens supports both autofocus (AF) and manual focus (MF). The focus mode switch is located on the side of the lens barrel.

• Samodejno ostrenje (AF): Set the switch to 'AF'. The camera will automatically focus when the shutter button is half-pressed.
• Ročno ostrenje (MF): Set the switch to 'MF'. Rotate the focus ring on the lens barrel to achieve sharp focus. Use the camera's viewfinder or LCD screen to assist with focusing.

The minimum focusing distance for this lens is 15.7 inches (approximately 40 cm) across all focal lengths.

Povečava

To change the focal length, rotate the zoom ring on the lens barrel. The lens offers a focal range from 28mm (wide-angle) to 70mm (short telephoto). The current focal length is indicated by markings on the lens barrel.

Figure 3: Illustrative image showing the location of the focus and zoom rings on the lens barrel.

Nadzor zaslonke

This lens features a constant maximum aperture of F2.8 throughout its zoom range. Aperture settings are controlled via the camera body. Refer to your camera's instruction manual for details on adjusting aperture.

Uporaba filtrov

The lens incorporates helical focusing, which means the front lens barrel does not rotate during focusing. This design is convenient for using polarizing filters or other filters that require precise orientation.

Vzdrževanje

Čiščenje leče

• Za odstranjevanje prahu in ohlapnih delcev s površin leč uporabite puhalnik.
• Za madeže ali prstne odtise nanesite majhno količino čistilne raztopine za leče na čisto krpo iz mikrovlaken in nežno obrišite lečo s krožnimi gibi od sredine navzven.
• Never use abrasive materials, solvents, or household cleaners on the lens.

Shranjevanje

• Ko objektiva ne uporabljate, vedno namestite sprednji in zadnji pokrovček objektiva.
• Lečo shranjujte na hladnem in suhem mestu, stran od neposredne sončne svetlobe in ekstremnih temperatur.
• Če shranjujete dlje časa, razmislite o uporabi razvlaževalnika, da preprečite rast plesni.

Odpravljanje težav

• Fotoaparat ne prepozna objektiva: Ensure the lens is securely attached and clicked into place. Turn the camera off and on again. Clean the electrical contacts on both the lens and camera body with a clean, dry cloth.
• Samodejno ostrenje ne deluje: Check if the lens is set to 'AF' mode. Ensure there is sufficient light and contrast in the scene for the camera's autofocus system to operate effectively.
• Slike so zamegljene: Verify that the lens is properly focused. Check the camera's shutter speed to ensure it's fast enough to prevent motion blur, especially in low light or with moving subjects. Ensure the lens elements are clean.

If problems persist, consult your camera's manual or contact Sigma customer support.

Specifikacije

Garancija in podpora

For information regarding warranty coverage, service, or technical support, please refer to the warranty card included with your product or visit the official Sigma Corporation of America webspletnega mesta. Račun shranite kot dokazilo o nakupu za uveljavljanje garancije.

Proizvajalec: Sigma Corporation of America