I tried to focus on Mandalay Fort, across the moat by which I stood. I couldn’t. I pulled the camera strap off from around my neck and switched to manual focus. Back on. I still couldn’t focus. The lens made uncomfortable clicks and skipped, the image relayed to my eye by little mirrors jumped from one kind of blurry to another. And thus I learned my go-to lens was broken. Luckily I had two others. Both are great in particular situations, but not quite as broadly versatile as my damaged lens. Disappointed, I buried the broken lens in my pack, swapping out its seat on the camera for the prime lens. Now I had one distance at which to gaze at the world through…