Advice, someone? I went to a camera store to order the D7100 today, and the store guy told me that without the OLPF this is a niche camera for landscape photographers only. I am technologically absolutely unknowledgeable--- is this true? He told me if I use it for photographing small patterns in nature, leaves and ferns, etc, that they will be wavy and fuzzy. And that it will be no good for people and animals-- I occasionally find myself surprised with a bear or cougar or bobcat that I don't want to miss, as well as some great candid human opportunities, including action shots. Most days I am in rain, snow, mud, sleet, etc. I read the preview and thought this sounded like the camera for me, now confused. Camera guy recommended Olympus OMD, Pentax K30 or Nikon 7000 instead. Advice?