Several sunset stills in this video for you to compare to. Best one is last few seconds of vid if you'd rather not watch the whole thing (it's a "thank you" video for the all our wedding vendors that had to endure hurricane Florence a week later). ZERO post editing, so this is all Spark with no filters. In my experience, unless I'm shooting moving objects in low light, I try to keep the ISO as low as possible (starts to get grainy over 200), and adjust brightness with the shutter speed instead. Please forgive the AWFUL video quality - this SD card got corrupted and had to be recovered. Photos came back ok, but major data loss on the video :-(
Hope this helps:
Wrightsville Beach.mp4