I recently bought a Nikon 24-70mm for my D5000, but I soon had the "lens not attached" message on my screen. The message disappears when I slightly rotate the lens a bit more.
I've searched online and found the advice to clean the connectors on the lens, but I already had these connection problems on the first day that I got it. I first thought that it was because of the cold that day, (max -5°) but now when the days are warmer, I still have this problem. Every time I rotate my lens to zoom, the lens loses the connection with the body.
Is it possible something is broken on my body or lens or should I try to clean the elements myself? I'm not experienced with cleaning my gear, is there a step by step tutorial available for this?