When it’s reasonably dark and I zoom in (even slightly and despite the camera showing before, during and after that the shutter speed is about 1/4 or 1/8 seconds) the camera seems to leave the shutter open for almost or about 1 second whilst making a mechanical noise and the resulting picture is thus slightly unclear. The odd thing is that it doesn’t always do this even though the camera and lighting positions are the same. So as a result there is uncertainty as to when I’ll get clear pictures and when I won’t. I am using the Olympus e-510 primarily with the standard 14-42mm lens but sometimes the 40-150mm and viewfinder and rarely the live view. This also happens whether I use the internal or an external flash. The only mode that this problem never happens with (only using the internal flash) is scene mode set as portrait. What I want to know is whether it’s a design flaw or just my camera or a minor setting change?