Long Exposure B&W, Part 3, (the Setup)

The reason I had you wait to put your ND filter on your lens is this: it will make things so dark, your lens won’t be able to see anything to focus on, so we set the focus before we put the filter on. Here’s how: (1) First, aim your camera at the scene you want to shoot and compose your photo just the way you want it. Then, (2) press your shutter button halfway down to set your autofocus. Now, (3) on the barrel of your lens, switch your focus to Manual. That way, your focus won’t get messed up once you put the filter on. With your focus set, go ahead and attach your ND filter to your lens. And, believe it or not, there’s something else that could ruin your long exposure—light sneaking in through your viewfinder. Some DSLRs actually have a ....