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Any white light filter on the market doesn't allow you to see anything other than sun spots because it is allowing only a little bit of many wavelengths through. All of the different wavelengths basically wash out any texture on the sun.
This is where Ha Solar Telescopes are fantastic, I have a little Coronado PST (Personal Solar Telescope), only very recently bought a camera that I can actually take images with (QHY5L-II), these telescopes have next to zero back focus.
As this telescope type allows only the ~656nm wavelength through (hydrogen alpha). The narrower the transmission (<1 angstrom) the finer detail that you will be able to observe.
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