Here is an additional coverage about the details of Sigma 20mm f/1.4 DG HSM lens designed for full-frame DSLR cameras.
Sigma 20mm f/1.4 DG HSM Art lens design comes withf 15 elements in 11 groups and includes both “F” Low Dispersion (FLD) and Special Low Dispersion (SLD) glass to significantly reduce chromatic and spherical aberrations, as well as limit distortion for clean, sharp, and evenly illuminated imagery.
First sample images taken with the new Sigma 20mm f/1.4 DG HSM Art lens can be seen at German website d-pixx. More buzz after the break.
Sigma 20mm f/1.4 DG HSM Art Lens Additional Coverage
|Lens construction||15 elements in 11 groups|
|Angle of view (35mm equivalent)||94.5°|
|Minimum focusing distance||27.6 cm / 10.9 in.|
|Dimensions (diameter x length)||φ90.7mm x 129.8mm / 3.6 in. x 5.1 in.|
|Number of diaphragm blades||9 (rounded diaphragm)|
|Maximum magnification ratio||1：7.1|
|Weight||950 g / 33.5 oz.|
- A Hyper Sonic Motor (HSM) that ensures a silent, high-speed AF function. Smoother AF is achieved when the this AF algorithm is optimized
- A nine-blade, rounded diaphragm creates an attractive blur to the out-of-focus areas of the image
- A brass bayonet mount of highly precise and durable construction to enhance mount’s strength and long-term wear resistance