I used my Sony a7iv with the 200-600 (took all my images at 400mm f8 iso 100). I made a solar filter from baader film for getting the partial eclipse images (they’re in the video I posted to /c/space, but took the filter off during totality to get this image and a couple of others)

Oh I also used a star adventurer 2i for tracking during the eclipse so that I could just use a timer to take intermittent images rather than having to continuously readjust the camera.

Edit - for the future, if anyone is looking for what I used for the filter, I made this holder for Baader film: https://www.thingiverse.com/thing:6573400

Yeah based off of some other comments, those are prominences. The big arc that’s at 5 o’clock in the photo was actually visible to the naked eye as a red dot, which was pretty cool.