Sigma 65mm F1.4 DG DN and Sigma 50-135mm f/2.8 DC DN APS-C Patents Found



A Sigma 50-135mm F2.8 DC DN and Sigma 65mm F1.4 DG DN patents were found by asobinet and while most patents do not become lenses the Sigma 50-135mm F2.8 DC DN could be a useful 3rd party 70-200mm full frame equivalent lens to compliment the popular Sigma 18-50mm f/2.8 DC DN Contemporary.

Sigma 50-135mm f/2.8 DC DN Overview

Example 1

Sigma 65mm F1.4 DG DN Overview

Example 1

via asobinet, asobinet, FujiAddict