The focusing ring on my kit zoom lens is sticky - meaning it does not turn smoothly when I'm trying to make fine focus adjustments. It turns fine otherwise, although I can feel a catch right before it starts to turn. It's like it needs a tiny bit of lubricant up in there. As an inveterate all around do-it-yourself'er I am sorely attempted to take a shot at this, but gee, this is my lens. It ain't the greatest lens out there but it's 100% better than having a gummed up lens that doesn't work and no back-up. So before I tinker I need some advice.
WD40 could obviously gum up the whole lens, unless maybe I put a little on the tip of a q-tip and run it around the edge of the ring; maybe enough would work its way in there to solve the problem without getting on anything else. Like a piece of glass. I could do the same thing with lithium grease, although I actually think a very light oil like WD40 might do better. I don't have any right now but I could get a tube of graphite, which is a fine powder best for loosening up locks without making them messy.
Or I could take it to a good camera store and let them look at it. Ritz is the only dedicated camera store I can think of nearby.
I'd appreciate anyone's thoughts . . . .