if the sun makes a curvature in the space time fabric and that the planets move in this curvehow comes the curvature isnt a complete circle? because planets dnt have complete circular orbits..some are oval and even irregular
What the others have said. Also, you can use it to be able to clean the sensor itself.
I've also heard that you're more likely to be struck if you have been before. I suspect that's something of a misstatement. I find it more likely that certain people are for some reason more likely to be struck. As to the odds of being hit the first time, you've probably got a better chance of being killed by a walrus.
Mirror lock-up involves flipping the mirror up well before the shutter opens, allowing the vibrations to die down before exposing the film. On some cameras MLU may be operated by an extra push of the shutter button, the second push resulting in the actual opening of the shutter. Other arrangements may involve an extra lever or button that flips the mirror up before using the shutter release button normally. On some cameras MLU is not a separate feature, but operated as part of the self timer. Note that when the mirror is in the up and locked position, the subject is no longer visible through the viewfinder. Therefore, the photographer must compose the photograph prior to activating mirror lock-up and keep the camera from moving. Use of a tripod helps prevent movement of the camera during this operation.
