I'm a newbie to photography and the forum. I've been taking pictures for years and learned anything I know by trial and error and reading. Mostly trial and error! I recently purchased an 18-200mm Nikon lens used from
Andorama. When using it on M/A, it is usually ok but at times it will stop autofocusing for a while and then start to autofocus fine. This has happened 2 or 3 times since I bought it. Is it something I might be doing or maybe the lens. I have 3 other Nikon lens that work fine, a 18-55, 70-300, 10-20mm. Any ideas or suggestions would be appreciated.