Tripod & Remote
Landscape photography often requires a sturdy tripod. You never know where your passion is going to take you. Today you could be shooting knee deep in the sea water, trying to catch the oncoming tide; tomorrow you could on a glacier trying to compose a shot. Landscape shots demand increased depth of field & sharpness. To achieve that, a sturdy tripod is a must.
Neutral Density Filter
Another thing that you should have is a Neutral Density & Graduated Neutral Density Filter set. It basically stops & balance the amount of light entering your camera through the lens. Use it when you need to block a sky, which is too dark against a foreground that is darker. You can also use it for longer exposures. When used properly, these filters alone, can bring that professional look to your ordinary landscape photo and transform into an extraordinary one.