Question of the week: What five questions should you ask yourself when buying a new lens?

Image: MirageC / Moment via Getty Images Two weeks ago, we started our new 'Question of the week' series in our forums. The series aims to get our vibrant community (that's you) thinking and talking about a range of photography-related topics. We'll be sharing a question every other Wednesday, and, at times, we'll also be sharing our favorite responses on the homepage. It's an opportunity to receive recognition for participating in these discussions and our way of highlig...