SIGMA 35mm F1.2
DG DN | Art
• Premier objectif de grand diamètre à ouverture maximale F1.2 de SIGMA
• Grande polyvalence qui permet de faire face à diverses situations de prise de vue, tant en photo qu'en vidéo
• Étanche à la poussière et aux éclaboussures
• Bague d'ouverture avec fonction de déclic
| Ligne | Art |
|---|---|
| Youtube Videos | |
| Instagram Widget | |
| Formule optique | 17 Elements in 12 Groups |
| Lens Type | Wide Angle |
| Sensor Size | Full Frame |
| Angle de vue | 63.4º |
| Diaphragme | 11 (Rounded Diaphragm) |
| Ouverture minimale | F16 |
| Distance minimale de mise au point | 30 cm |
| Rapport de reproduction maximal | 1:5.1 |
| Dimensions (diameter x length) | L-Mount ⌀ 87.88 mm x 136.2 mm |
| Poids (gramme) | L-Mount：1,090g Sony E-mount：1,080g |
| Diamètre de filtre | 82mm |
| Edition number | A019 |
| Accessoires | Case, Petal Type Hood with Lock (LH878-02) supplied. |
| EAN | L-mount 085126341695 |
LENS CONSTRUCTION
GEOMETRICAL MTF Chart
DIFFRACTION MTF CHART
Dust and Splash Resistant Structure
This lens features a highly effective dust and splash resistant structure with special sealing at the mount connection, manual focus ring, zoom ring, and cover connection.
*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.
High-precision, rugged brass bayonet mount
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Water and oil repellent coating
Incorporates a water and oil-repellent coating that allows water to be wiped away easily and prevents oil and fat from sticking to the surface, even in challenging shooting conditions. At the same time, the maintenance of the lens surface becomes easier.
AFL button
the AFL button can be assigned with various functions widens the range of operations available on the lens.
Aperture ring click switch
Mounted with a de-click function for removing clicks by the aperture ring click switch, enabling seamless operations that are especially useful such as during video shooting.
Aperture ring
Aperture ring, designed to help users work intuitively
Aperture ring
Aperture ring, designed to help users work intuitively
Rounded diaphragm
The polygonal shape of a conventional iris dia phragm causes out-of-focus light points to appear polygonal. A rounded diaphragm is designed to pro duce rounded out-of-focus light points when opened to near maximum aperture. This creates attractive bokeh effects in many situations, such as when pho tographing a subject against an out-of-focus surface of water from which light is being reflected.
Exclusive low-dispersion glass
The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as "secondary spectrum" may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD ("F" Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.
