I've been considering the Tameron 18-270mm f/3.5-6.3 lens. It's for sale at 530$. I'm a student to this is probably top of my budget I decided. I enjoy landscape, but as I learn my camera more - I'd like to start shooting a few senior photos. I'll also be a 2nd photographer (learning) at a few of my friends weddings upcoming. I also have the nikkor 50 mm f1.8 lens. Thanks.