I use it with a BlackMagic Pocket Cinema Camera 4k and a "soapy" Viltrox speed duster, however, the lens opens up just 99.9% I have been using it for a year now as the main and only one, I don’t even think about changing this focal interval to something else. Has some pros Dream lens. The best fast zoom for crop and mft cameras with a budget of up to $ 5000 is definitely not to be found. Color, detailing, design, just a gun. Some cons: None. Although it would probably be cool if the sigma had a stabilizer.