This week I'll be going to Tokyo's used camera shops to pick up a lens or 2 (or 3) for my OM4. What lenses would the users here recommend I look for? At the moment I have a 24mm 2.8, 35mm 2, 50mm 1.4, and a 55mm 1.2. Besides lenses, what other accessories are useful or interesting? What things are on your wishlists?