Over the last few months, I have noticed a problem with the shutter release on my D90.
Most of the time, the shutter release works ok. But sometimes, both half-press and full-press fail to work. Sometimes half-press will work, but full-press won't. Sometimes, half-press will work, then a full press will make the shutter release 'click' but not actually take a picture. If you then press really hard, it will take a picture.
This is not a problem with focus lock, flash recharging, card buffer filling up or having the camera in the wrong mode. Trust me.
I have noticed that this only happens when pointing the camera forward. If you point it straight up (i.e. taking a picture of the sky) the shutter release works perfectly. I have tried turning on/off, resetting to factory etc.
I wondered if anyone has seen this happen to the D90, or any other camera. Any advice before I:
1) Tear the camera down and check for loose connections
2) Send it off to Nikon at exorbitant time and cost