Here is some additional information on the upcoming Sigma 135mm f/1.4 DG Art full-frame lens that is expected to be announced on September 9th during Sigma’s “Master of Optics” event: Full-frame autofocus lens 105mm filter thread Weight: 1320g Classic black finish Removable tripod collar Available for Sony E and Leica L-mount New product launch live … Continue reading Additional information on the upcoming Sigma 135mm f/1.4 DG Art full-frame lens