I photographing the 2017 solar eclipse. During totality, I observed solar prominences (loops off the surface of sun) and the corona., Also a “diamond ring” shot.
I found exposure guidance on http://www.mreclipse.com/SEphoto/image/SE-Exposure1w.GIF. During the total eclipse, no dark filters are necessary.
By following the table provided in that link, I selected 800 ISO, f/8.0, and a range of shutter speeds from 1/2000 to 1/13 second. I just clicked and changed the shutter speed by a stop or so; repeat.
My diamond ring photo ( 1/50 sec F8.0 ISO 800). It would have looked more like a ring with a darker exposure of 1/800s.
Prominences and Chromosphere
Pro: Wow. I got details like on the “real” photos like red prominences and the chromosphere (lower photo) and the diamond ring (upper photo).
Con: I felt kind of guilty not using my tripod but speedy pointing was of the essence.
I wish I had a higher zoom lens. Cropping only goes so far.