Just got my EM5 a week ago - what a camera!! I got it with the kit 12-50mm lens. We are taking 2 trips this year, one to Utah to hike some of the national parks; and the other to Russia and Finland (river cruise from Moscow to St. Petersburg). What lens(es) would you recommend to add to my bag? I generally shoot landscapes & flowers, and some grandkids. Also birds, but I already know I'll be looking at the new Oly 75-300 when it comes out to handle long shots. Thanks in advance for your advice.