Jason,
I arrived late to the party but wanted to give my thoughts.
I used to believe landscapes should be sharp thru-out. Most of my own work fits that model.
However, over the years, my view has changed particularly when an image has a point of focus & subject along with with other elements that lend themselves to sharp/soft technique as with your type of lens.
I think all three of your images are very pleasing and excellent examples of what can be done very successfully with soft focus and careful composition.
I have not used lenses similar to yours, but I'm assuming you very carefully chose those areas that would be sharper vs softer. I think you did a great job in making several very interesting images.
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