Hello, I'm wondering if anyone has experienced a similar problem as I with the Pen-F.... Occasionally, when using the viewfinder, the picture goes completely blank (dark)! This seems to only happen in certain modes. If I point the camera at the sky (or to some different area, usually upwards), the picture comes back. It happens with multiple lenses. I'm using only Olympus lenses, by the way... I don't think it happens in Mono mode, but it's a regular occurrence in many other modes. It's extremely frustrating! I was hoping it was just something a firmware update could solve. But that brings me to my next issue, I can't use the Olympus updater on my Mac. It seems I will need to borrow a Windows machine from someone. Thoughts?