HArd to turn awau from a sunset without snapping a shot. No exposure data here to go by but it looks as though you mist the focus. Easy thing to do when you have such a bright image in the viewfinder. Use the distance scale on the focus ring and set your apeture, in this case, perhaps the smallest available and then bracket the apeture by opening up, re adjusting the shutter and take another. You will be please with the different effect the varying apetures will give you and you foreground shoud be in focus as well has your horizon...