What about panoramic pictures? Is there any way to lock ballhead only for horizontal movement?
In short, no, the Compact Ball Head sold on the Peak Design Travel Tripod does not have an independent panning function. Using the Peak Design ball head ring creates a unique simple workflow that is different than typical ball heads and we encourage you to give it a try without comparing features 1:1 with other heads.
Peak Design is aware that the compact ball head is not ideal for the video community. Because of this we have a pan/tilt video head for the travel tripod on our development roadmap.
For now, we have an add-on adapter that allows our tripod to be used with any 3rd party ball head. If you use the panning function frequently and/or shoot a lot of video, we recommend using this adapter