I'm going on a trip here in a couple of weeks to Yellowstone National Park. I was wondering if taking my old (10 years) digital camera would be worth it and if the camera would be better quality than my smartphone. I have an Olympus C-750 Ultra Zoom 4MP camera with 10x optical and 4x digital zoom. I've also got a Samsung Galaxy S4 that's 13MP. I'm not very knowledgeable about cameras, but I understand megapixels and how, unless your printing wall murals, greater than 4 probably doesn't make a whole lot of difference. Any advice would be great!