Hello! I'm going to be getting myself a Canon EOS Rebel T5i soon. It comes with the EF-S 18-55mm f/3.5-5.6 IS STM Lens. I really want to take some great portraits and was wondering which lens, without breaking the bank, would be best to upgrade to? I am also hoping someone here might be able to tell me if one of my older lenses would work with this camera. It is a Tamron 70-300mm 1:4-5.6 Tele-Macro (1:2). I've never used a dSLR that does video and was also curious if I need to pay specific attention to lenses that are compatible in regards to video. Thanks!