The dark face and the curled horns make this a Swaledale, the breed that does most of the work on the higher, rougher ground up here. This one was in a field near the road and let me get close enough for a portrait, which is not always the arrangement.
There is a moment when a sheep decides you are neither food nor threat and simply stops caring, and that flat, level look is what you want. She held it long enough for one frame, then went back to the grass.
Nothing clever in the making of it, just the 55 at a working aperture and enough patience to let her settle.