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.

Setup

Pričvršćivanje sočiva

1. Provjerite da li su i kamera i objektiv čisti i bez prašine.
2. Skinite zadnji poklopac objektiva s objektiva i poklopac tijela 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. Umetnite objektiv u bajonet fotoaparata i okrećite ga u smjeru kazaljke na satu dok ne klikne na svoje mjesto. Nemojte silom pritiskati objektiv.

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

Uklanjanje sočiva

1. Isključite kameru.
2. Dok držite pritisnuto dugme za otpuštanje objektiva na kućištu fotoaparata, rotirajte objektiv u smjeru suprotnom od kazaljke na satu dok se ne zaustavi.
3. Pažljivo uklonite objektiv sa nosača kamere.
4. Pričvrstite zadnji poklopac objektiva na objektiv i poklopac tijela na fotoaparat kako biste zaštitili senzor i elemente objektiva.

Upravljanje objektivom

Fokusiranje

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

• Autofokus (AF): Set the switch to 'AF'. The camera will automatically focus when the shutter button is half-pressed.
• Ručno fokusiranje (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.

Zumiranje

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.

Kontrola otvora blende

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.

Korišćenje filtera

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.

Održavanje

Čišćenje sočiva

• Koristite četku za puhanje kako biste uklonili prašinu i rastresite čestice s površina objektiva.
• Za mrlje ili otiske prstiju, nanesite malu količinu rastvora za čišćenje sočiva na čistu krpu od mikrovlakana i nježno obrišite sočivo kružnim pokretima od centra prema van.
• Never use abrasive materials, solvents, or household cleaners on the lens.

Skladištenje

• Uvijek pričvrstite prednji i zadnji poklopac objektiva kada se objektiv ne koristi.
• Čuvajte objektiv na hladnom i suhom mjestu, dalje od direktne sunčeve svjetlosti i ekstremnih temperatura.
• Ako skladištite duži period, razmislite o upotrebi sredstva za odvlaživanje kako biste spriječili rast plijesni.

Rješavanje problema

• Kamera ne prepoznaje objektiv: 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.
• Autofokus ne radi: 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 su mutne: 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 i podrška

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 webSačuvajte račun kao dokaz o kupovini za reklamacije u slučaju reklamacije.

Proizvođač: Sigma Corporation of America