Digicame-info found some interesting wide-angle Sigma zoom lens patents that are f/1.8. The Sigma 15-24mm f/1.8, 16-28mm f/1.8, and 18-30mm f/1.8 could all be useful zooms, but they will likely be very expensive given their fast apeture. ･IP Force Applicant: Sigma Co., Ltd. Publication number: P2022126058 Application number: P 2021023909 Publication date: 2022-08-30Title of invention: … Continue reading Sigma 15-24mm f/1.8, 16-28mm f/1.8, and 18-30mm f/1.8 Patents Found