I've been using my Casio EX-Z300 for well over a year with few problems. Recently, I notice a stain appearing on the upper-left side of the screen. The circular stain only appears in wide-angle shots. It appears to be translucent. If I use telephoto zoom, the spot disappears. It is very annoying as it's ruining all my wide-angle photos. Is it possible it's a water droplet trapped inside the lens? If so, how to remove? Otherwise, the camera takes nice photos. A problem which I've had all along is the Calendar Search function never worked. The camera is unable to show the calendar so it's unable to find photos on an SD Card. I am forced to scan through almost 2,000 shots to find the 1 I'm looking for. My main concern right now, is that spot ruining my photos.