Hi bro/Sis, I am quite confused about decision which path to move. Well presently I only have 50 mm1.8, sigma 18-200 and sigma 150-500 for my 7D. My question now is wheneer I saw someone doing something different from what I'm doing I feel like trying. Hence, should I collect all kind of lens for different purpose. Let's say for instance like potrait, wide angle,fish eye,macro birding and night landscape? Or should I/we concentrate at 1 thing at a time. I'm not rich ,got to save up eat bread everyday to fund for lens. Secondly do you Guys collect different lens for different event/occasion/purpose too?