Hi everyone, this is my first post! I thought I'd better ask the experts for this one. I'd really appreciate any advice I want to get my dad a birthday gift. He has a nikon D300 (excuse the typo the title, I think it is D300 and not the other way around), for which he has a 18-200mm lens and a 50mm lens. It's a hobby of his, he mainly photographs family events, mom's latest cake, landscapes and architecture around the place, that kinda thing So I'm asking you guys if there's anything I could get him to compliment his camera? Maybe even something small like a macro converter or a filter that is inexpensive but fun to experiment with? or maybe there's something like an external flash that'd prevent that caught in the headlights look... or heck feel free to suggest books or computer software, too. i'm pretty flexible up to 100$ or so. I just have no idea how to start looking and what I need to watch out for in terms of compatibility with his camera model. thanks!