Hello
Maersk65, I did experiment a bit with yaw-expo settings for the Spark but eventually I gave up.
The reason being that whatever values you select, you only get more of an exponential curve than the factory default linear curve. Now the problem with an exponential curve is that you will never be sure how much stick input to use. You will require larger stick movement initially for the yaw to start, which is no doubt good for beginners who take a while to get used to being gentle on the sticks but as you press the sticks further, the yaw speed increases non-linearly (exponentially) and I found it very difficult to control in order to get smooth cinematic shots. I also realised over time that combining forward or backward motion with yaw is the best way to pan across a scene rather than just hovering in place and yawing. The course lock and home lock functions available in Litchi are two great features to perform this combined maneuver efficiently. I am sharing a video below to show what I am trying to explain. The video is a combination of 3 shots. The first shot has been filmed using Litchi home lock, the remaining two are just manual flying. Everything has been shot with factory default settings on the Spark (no yaw-expo function used).