I had mentioned in another thread that I noticed blurring of fine detail on the Osmo Action that I had not seen on the Osmo Pocket. But why? Both seemingly use the same chip and compression scheme, so there must be something else at work.
Reviews that I had read never mentioned it with the exception of Philip Bloom. He surmised that it was the result of the wider angle lens of the Action vs the Pocket that resulted in an 'overload' of detail for the H264 compression. It sounded plausible, but I thought it might also be something else.
So here are 3 clips, the first is the Osmo Action with RockSteady engaged (their terminology for EIS), the 2nd clip with RS off and the 3rd from the Osmo Pocket. Look for the detail and artifacts in both the grass & the backs of the deck chairs.
When viewed on my 77" TV, the clip with the RS engaged blurs fine detail & creates artifacts more than with RS off. So it seems when this tiny cam is given the task of both processing 4K60p video and electronically stabilizing at the same time, it becomes a task just too great in terms of retaining fine detail. The Pocket, with mechanical stabilization via the gimbal, doesn't have to be concerned about electronically stabilizing the video, and thus presents a cleaner image. Although the wider angle of the Action may be partially responsible, I do think the EIS is the greater culprit.
Deactivating RS, to achieve better image quality, results in what I would consider to be essentially unusable video and defeats the purpose of the device. In general, I prefer the video quality from the Osmo Pocket with its mechanical stabilization and better low light.