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A test image before the eclipse taken wide open with stacked 2.0 and 1.4 teleconverters; the effective focal length is actually 1120mm. (The EXIF data doesn't handle stacked teleconverters correctly... one of these days I'll fix that. But the aperatures are correct as far as I can tell.) The sunspots came out better than I would have expected; I really should have considered using one or more teleconverters during totality to get better detail on the corona. The remaining pictures were taken sans teleconverter. All of my photos where the photosphere is visible were taken with a 10-stop neutral density filter.

Canon EOS 5DS, 100-400mm f/4.5-5.6L II with 2.0xTC at 800mm, 1/4000 at f/16.0, ISO 50