Our Catta Zoom Set from DZOFilm is a lightweight solution when shooting full-frame sensors on a Sony or Canon RF System like our Sony FX6 or FX3 or the New Canon R5C. It's also fine to use with our C70 with their Super 35-Sensor. Check out the tech specs in the Info field. The Catta Zooms were specially made to work with mirrorless camera systems. By this, the dimensions of the lens could keep much smaller. The filter diameter and also outer shape are the same on both lenses. This will make swopping of lenses a no trouble job. The parfocal design ensures staying focussed when zooming in or out. The T2,9 makes this the perfect tool for documentary or when shooting in low light situations. There is a filter tray for drop-in filters if filtering in front is impossible. The Set consists of two lenses: 30-80mm and 70- 35 mm both with T2,9. Currently, we offer the Sony E-Version and the Canon RF-Version.