SIGMA 50mm F2
DG DN | Contemporary
• Système de mise au point interne
• Moteur pas à pas
• Autofocus grande vitesse
• Compatible avec la fonction de correction des aberrations optiques
• Revêtement multicouche
• Bague d'ouverture
| Ligne | Contemporary | |
|---|---|---|
| Formule optique | 11 elements in 9 groups with 1 SLD and 3 aspherical lens elements | |
| Lens Type | Standard | |
| Sensor Size | Full Frame | |
| Angle de vue | 46.8° | |
| Diaphragme | 9 (afgerond) | |
| Ouverture minimale | F22 | |
| Distance minimale de mise au point | 45cm | |
| Rapport de reproduction maximal | 1:6.9 | |
| Poids (gramme) | 350 gram | |
| Diamètre de filtre | 58mm | |
| Edition number | 023 | |
| Accessoires | Magnetic metal lens cap LCF58-01M, Front Cap LCF-58III, Lens Hood LH63301, Rear Cap LCR II | |
| EAN | L-mount: 0085126314699 Sony E-mount: 0085126314651 |
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LENS CONSTRUCTION
GEOMETRICAL MTF Chart
DIFFRACTION MTF CHART
Stepping Motor
The lens is capable of smooth, quiet and high-speed AF made possible by a stepping motor, as well as supports Face/Eye Detection AF and video AF.
Super Multi-Layer Coating
SIGMA's own Super Multi-Layer Coating suppresses flare and ghosting by preventing reflections with in the lens. All lenses in the current SIGMA range feature this original technology. In digital cameras, flare and ghosting may also be caused by reflections between the image sensor and lens surfaces. Here too, SIGMA's Super Multi-Layer Coating is highly ef fective, assuring images of outstanding contrast.
Aperture ring
Aperture ring, designed to help users work intuitively
Linear focus / Non-linear focus (for L-Mount only）
A focus movement method of interchangeable lenses for mirrorless cameras (DN lens) in relation to the rotational angle of the focus ring during manual focusing.
With "non-linear focus," the amount of focal point movement varies depending on the focus ring rotational speed.
With linear focus, if the focus ring rotational angle is the same, the amount of focal point movement remains the same regardless of the focus ring rotational speed.
Mount with Dust and Splash Resistant Structure
The lens mount incorporates rubber sealing to protect the mount from dust and water drops.
Lens construction: 11 elements in 9 groups with 1 SLD and 3 aspherical lens elements
Inner focus system
Compatible with high-speed autofocus
Compatible with lens-based optical correction
Support DMF and AF+MF
Compatible with AF assist (Sony E-mount only)
Lens hood (LH633-01)
Magnetic metal lens cap (LCF58-01M)
Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
Designed to minimize flare and ghosting
9-blade rounded diaphragm
High-precision, durable brass bayonet mount
