Sigma has announced a second-generation version of its full-frame 35mm F1.2 'Art' lens, after teasing that it was coming ...

Hot on the heels of the stabilized 200mm F2, Sigma is releasing another first for mirrorless systems: the 135mm F1.4 DG Art.

This paper proposes a novel technique called the recursive non-linear active threshold-based and modified gain FXRLS (NAMGFxRLS) algorithm to overcome the inadequacies of impulsive noise and ...

In this study, we conducted a comparative analysis of various linear and nonlinear unmixing methods to estimate the composition of intricate clay powder mixtures based on their spectral reflectance.