DPreview tested the S1H and concludes:
The S1H brings the features and feel of Panasonic’s GH series to the L-mount full-frame system. It’s a compact and affordable package if judged according to the standard of its broadcast-grade footage. The rolling shutter figures are worth being conscious of, and the autofocus isn’t as impressive as the rest of the camera, but overall it’s a superb video tool that will address a wide range of needs.
Panasonic S1H at Amazon, BHphoto. Adorama. FocusCamera. Park UK.