This summer I'll be partaking in a month-long abroad course at my school. I'll be flying to Portland, OR and spend the next month with a group of classmates touring six states by car. 75% of the time we will be camping outside overnight, and it's a very outdoor-intensive course with lots of hiking and visiting natural wonders and stuff like that. As a photographer I definitely want to bring an SLR along. I have a heavy, but possibly more weather-resistant D300 and the lighter D90. Keeping in mind that neither are insured and the D90 is cheaper and smaller, I'm leaning towards bringing the D90. I'll probably bring my camera equipment in my Slingshot 100 bag which includes the nylon weather cover thing to protect from rain, and has room for a camera, flash, and a lens or two at most. Of course with all the hiking involved, I'd like to pack as light and comfortable as possible, but I'm not sure which lens to bring. I currently own the very-expensive and heavy 17-55 f/2 which I think might be overkill for something like this. I have my old 18-70 f/3.2-4.5 kit lens, a 50mm f/1.8 which I don't think is wide enough for all-around use, a 105 macro, and a 70-300 f/4-5.6 without VR. I was also considering renting an 18-200 f/3.5-5.6 and using that as my only lens. I can't afford to buy it and don't think I would put it much use outside of this trip anyway (too slow for what I do). What do you think would be the best course of action? And as a secondary question if you care to answer, I'm a pretty terrible landscape photographer. I usually come back from a trip with very boring outdoor images. From what I hear, I'll be going to some amazing places this summer. What should I focus on to capture them best?