20mm F1.4 DG DN | Art
An Art level 20mm F1.4. The ultimate lens for astrophotography.
Outstanding optical quality and a range of invaluable features – The ultimate astrophotography lens from the 20mm F1.4 pioneer
The SIGMA 20mm F1.4 DG DN | Art delivers exceptionally detailed results that easily satisfy the high demands of professional photography and other high-end applications. With 17 glass elements arranged in 15 groups, including two SLD, three aspherical glass elements and the largest class double-sided aspherical glass element in SIGMA’s history
Lens Construction
17 elements in 15 groups
Angle of View
94.5 °
Number of Diaphragm Blades
11 (Rounded diaphragm)
Minimum Aperture
F16
Minimum Focusing Distance
23cm / 9.1in.
Maximum Magnification Ratio
1:6.1
Filter size
φ82mm
Dimensions (Diameter × Length)
L-Mount φ87.8mm × 111.2mm / φ3.5in. × 4.4in.
Sony E-Mount φ87.8mm × 113.2mm / φ3.5in. × 4.5in.
Weight
L-Mount 635g / 22.4oz.
Sony E-Mount 630g / 22.2oz.
Edition Number
A022
About Edition Number
Supplied Accessories
・Case ・Petal-type lens hood with lock (LH878-04) ・Front Cap (LCF-82 III) ・Rear Cap (LCRII) ・Guide Plate (GP-21)
Corresponding AF Mounts / Barcode No.
L-Mount 00-85126-41469-6
Sony E-Mount 00-85126-41465-8
Technologies
Lens Heater Retainer
The Lens Heater Retainer is a protruding lip at the front of the lens. When the…
Rear filter holder
The rear filter holder allows the attachment of a sheet-type filter to the rear…
MFL switch
The MFL (Manual Focus Lock) switch disengages the focus ring on the lens. After…
* The appearance and specifications of the product are subject to change. * This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation. * L-Mount is a registered trademark of Leica Camera AG.
