Monthly Archives: September 2026

Canon Patent JP 2026-130227: Exploring Optical Formulas for RF 20mm, 24mm, and 26mm F1.4 Lenses

A recent Canon patent application, JP 2026-130227, reveals some of the wide-angle optical designs currently being evaluated by Canon’s engineering team. The patent explores several full-frame optical formulas featuring a fast F1.4 aperture, specifically for 20mm, 24mm, and a rather unusual 26mm focal length. As with all optical patent applications, these documents represent ongoing research […]

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Sigma High Speed Zoom Line 18-35mm T2 and Sigma FF High Speed Prime Line 35mm T1.5 Firmware Updates Available

Firmware update for Canon EF Mount Sigma Cine LENS Thank you for using Sigma products. We are pleased to announce that the download of firmware for Sigma Cine LENS for Canon EF Mount is now available. The changes in this firmware are as follows: 【Applicable product and version】 Sigma High Speed Zoom Line 18-35mm T2 […]

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