Could this be lens creep? Or could it something else? I'm working on the Long Exposure Challenge. I set up a fresh flower arrangement in a dark hall, and played with some flashlights to create some low level lighting. The flower arrangement gave me an extra challenge, as it has "water beads" in the vase -- marble-sized gel balls that are shimmery and reflective, like crystal, and there is an LED light under the vase to give it a neat "glowing" effect. I used a tripod and a wireless remote, so I wasn't touching the camera. I took a lot of shots, but when I put them on the computer, I find that most of them are blurry. Here's a close up of one of them: ISO 100, 35mm, 1 ev, f/5, 3.5 sec. I'd like to continue experimenting with Long Exposures / Low Level Lighting, but I need to figure out what's causing this before I do any more. What could I be doing wrong? Or could it be my equipment? I took long exposures (3-15 seconds). Could lens creep cause this? Help!!!