Rumors hint at super-fast Sigma 50-100mm F1.8 Art lens for APS-C DSLRs

Rumors hint at super-fast Sigma 50-100mm F1.8 Art lens for APS-C DSLRs
Rumors suggest Sigma is getting ready to…
Source: dpreview
Rumors hint at super-fast Sigma 50-100mm F1.8 Art lens for APS-C DSLRs