The lens, which is likely to be popular with video users running a GH5/GH5S, is a versatile wide zoom (20-50mm in full-frame equivalent) with a fully de-clicked stepless aperture ring for silent and smooth shooting. It also has a focus clutch to easily switch between manual and automatic focusing, with precision in manual. The inner focus drive also helps with silent autofocus while shooting, and the lens has been designed to suppress any focus breathing.
The lens features 17 elements in 12 groups, 3 of which are aspherical and 4 ED (extra-low dispersion) to correct for chromatic aberrations. The 10-25mm F1.7 is expected in July of 2019 at a price of $2499.99.
Panasonic also announced two weather and dust-sealed teleconverters for their full-frame S-Series lineup. Both teleconverters can be used with the S PRO 70-200mm F4 O.I.S. lens, and will be compatible with the S PRO 70-200mm F2.8, expected later this year.