Pentax KX KX Manual - Page 27

MIRROR LOCK-UP In normal picture-taking situations, when you trip the shutter, the reflex mirror swings up out of the way. It then automatically drops back down into place. Inevitably, this causes a small amount of vibration - and the longer the lens you use, the more noticeable the vibration will be. To avoid this vibration, it is possible to lock the mirror up after you have completely finished focusing. (Because you will not be able to see anything through the viewfinder once the mirror is up, you must finish focusing before locking it up. And because light will not reach the light meter, it is necessary to have proper exposure set before lock-up. Also, it is essential to use a tripod for this kind of shooting.) Once everything is in focus, simply turn the lock-up lever (;) clockwise as far as it will go and depress the depth-of-field preview lever C) . The mirror will now stay up even after you trip the shutter. To release the mirror, return the mirror lock -up lever to its original position. The reflex mirror can be locked up either before or after you advance the film. A B When locking up the mirror, do not keep the camera facing directly into the sun for a long time. Direct sunlight through the lens might damage the shutter curtain. • 25