BMPCC4K + Sigma 18-35mm Vignette Test on Metabones Speed Booster, Aputure and Viltrox

Vignette Test on Blackmagic Pocket Cinema Camera 4K (Firmware 5.2) Sigma 18-35mm (Firmware ), shot in 4K DCI with four Focal Reducers: 1. Aputure DEC LensRegain (Firmware 1.4) @f1.2 2. Metabones Speed Booster XL (Firmware 3.0) @f1.2 3. Metabones Speed Booster Ultra (Firmware 3.0) @f1.3 (stated as “f1.2“ wrong in the video!) 4. Viltrox EF-M2 (Firmware 3.1) @f1.2 non Focal Reducer Kipon AF Adapter @f1.7 What is your favourite Focal Reducer? A-Cam: Blackmagic Ursa Mini Pro 4