You wouldn't need a filter of any kind during totality, even for wide-angle landscapes. On my first eclipse in India in 1995, I took a wide-angle shot of the scene during totality. One of the cool things that I did not expect, is that you get a 360-degree sunset glow all around you when you are in the shadow of the moon. This picture "sort of" captures that. Granted it was taken with 50-speed slide film, and then scanned, so the quality is about as low as you can get. The corona of the sun is hopelessly overexposed, as you can see. This eclipse was only 60 seconds long, so I just pushed the button on the camera while watching the eclipse through binoculars.