Ok so I have a Nikkor 16-85 and I use this lens almost 80% of the time. Recently I noticed a bunch of photos and video out of focus and I I'm pretty good about being spot on. Because of the small screen I would zoom in, focus, and then zoom out to whatever focal length I want to shoot in. Now when I do this and zoom all the way back to 16mm my shots are blurry and out of focus. I swear this used to be a non issue as I have been doing this for some time now. Has something gone wierd withing my lens or is this just a faulty method of getting focused on my subject?