SIGMA 35mm F1.2 DG II Art Lens

Introduction

Thank you for purchasing a Sigma lens. Please read this instruction manual carefully to correctly understand the lens’s functions, operation, and handling precautions, and enjoy taking photographs.

Warnings and Safety Precautions

WARNING!! : SAFETY PRECAUTIONS

• Do not look directly at the sun through the lens. Doing so can cause damage to the eye or loss of eyesight.
• Do not leave the lens in direct sunlight without the lens cap attached, whether the lens is attached to the camera or not. This will prevent the lens from concentrating the sun’s rays, which may cause fire.
• The shape of the mount and its surrounding parts are very complex. Please be careful when handling them so as not to cause injury.
• Please use a sturdy tripod that is capable of supporting the weight of this lens. If the tripod is not sturdy enough, it may tip over.
• This lens has a built-in magnet. Please keep it at least 5cm (2in) away from medical devices such as cardiac pacemakers as it may adversely affect them.
• Please do not place credit cards featuring a magnetic strip (or any other object that is sensitive to a magnetic field) close to the lens as it could damage the data stored on the card.

CAUTION

On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON’ (AUTO).

Attaching to the Camera Body

Please refer to the camera’s instruction manual for details on how to attach it to or detach it from the camera body.

On the lens mount surface, there are electrical contacts. Please be careful with their handling as scratches or dirt on them could cause malfunctions or damage.

Lens Operation

FOCUSING

For autofocus operation, set the focus mode switch on the lens to the “AF” position (Fig. 2). If you wish to focus manually, set the focus mode switch on the lens to the “MF” position. You can adjust the focus by turning the focus ring (Fig. 1-2). Please refer to camera’s instruction manual for details on changing the camera’s focusing mode.

AFL BUTTON

It is possible to cancel autofocus by pressing the AFL button while the AF is operating (AF lock / AF stop function) (Fig. 3). With some cameras, the AFL Button does not work. Some camera bodies can customize the function of the AFL Button, so please check the details of the camera’s instruction manual.

IRIS RING (Fig.1-5)

It incorporates an iris ring that is useful to adjust the aperture value during Aperture Priority Auto mode and Manual Exposure mode. With some cameras, the iris ring does not work. Check the camera’s instruction manual for how to adjust exposure.

IRIS RING CLICK SWITCH

It is possible to select to activate/deactivate the click of the iris ring, and this function would be effective for movie shooting. To deactivate the click of the iris ring, set the switch to “OFF” (Fig. 4).

IRIS RING LOCK SWITCH

If you use the Iris Ring Lock Switch when the aperture is set to A, it will be fixed on A. This function will be useful when adjusting the F-stop via the camera (Fig. 5). If you use the Iris Ring Lock Switch when the aperture is on any aperture setting other than A, the aperture ring can still be rotated from maximum to minimum aperture. This function will be useful when adjusting the F-stop via the Iris ring (Fig. 6).

LENS HOOD

The lens hood helps to prevent flare and ghosted images caused by bright illumination from outside the picture area. Attach the hood and turn clockwise until it stops rotation (Fig. 7). To detach the hood, turn counter-clockwise while pushing the button (a) until it stops rotating (Fig. 8). When not in use, the lens hood can be attached upside-down (Fig. 9).

Basic Care and Storage

BASIC CARE AND STORAGE

• Avoid exposing the lens to extreme temperatures or high humidity environments.
• Please store this lens in a cool, dry place with good ventilation. To avoid damage to the lens coating, keep away from mothballs or naphthalene gas.
• Do not use thinner, benzine or other organic cleaning agents to remove dirt or finger prints from the lens elements. Instead, clean with a soft, moistened lens cloth or lens tissue.
• The lens has a dust and splash resistant structure. Although this construction allows the lens to be used in light rain, it is not the same as being waterproof, so please prevent large amounts of water from splashing on the lens. It is often impractical to repair the internal mechanism, lens elements and electric components if they are damaged by water.
• Sudden temperature changes may cause condensation or fog to appear on the surface of the lens. When entering a warm room from a cold environment, it is advisable to keep the lens in the case to allow the lens to reach room temperature more gradually.

Lens Parts Description

DESCRIPTION OF THE PARTS (Fig.1)

• 1. Filter Attachment Thread
• 2. Focus Ring
• 3. AFL Button
• 4. Focus Mode Switch
• 5. Iris Ring
• 6. Iris Ring Click Switch
• 7. Iris Ring Lock Switch
• 8. Mount
• 9. Lens Hood

Diagram illustrating the various parts of the SIGMA 35mm F1.2 DG II Art lens, numbered 1 through 9, corresponding to the "DESCRIPTION OF THE PARTS" section.

A close-up view of the Focus Mode Switch on the lens, showing the AF (Autofocus) and MF (Manual Focus) positions.

A close-up view of the AFL (Autofocus Lock) button, indicating its function for AF lock or AF stop.

A close-up view of the Iris Ring Click Switch, showing the ON and OFF positions, likely for enabling or disabling the click sound of the aperture ring.

An illustration demonstrating the Iris Ring Lock Switch. When set to 'A', the aperture ring is locked to the 'A' position, allowing aperture control via the camera body.

An illustration showing the Iris Ring Lock Switch in a position other than 'A'. In this state, the aperture ring can be rotated freely from its widest to narrowest setting, allowing manual aperture adjustment via the lens ring.

A diagram showing how to attach the lens hood by aligning it and turning it clockwise until it clicks into place.

A diagram illustrating how to detach the lens hood by pressing a release button (labeled 'a') and turning it counter-clockwise.

A diagram showing the lens hood being attached upside-down onto the lens for compact storage.

Technical Specifications

TECHNICAL SPECIFICATIONS

The figures are for L-mount. The glass materials used in the lens do not contain environmentally hazardous lead and arsenic.