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>=20 >=20 >=20 > ND has no mirror lock-up that I know. If you are asking to lock the mirr= or to > clean the CCD then the function won=B9t activate unless you use the AC powe= r for > the camera, the mirror won=B9t luck even you have a fresh and fully recharg= ed > cells inside. One quick way to clean the CCD during field work that I di= d is > to turn to B shutter setting and hold it as long as you need to clean it = =AD > when you do so it is recommended to remove your memory card so you don=B9t = waste > one shot. >=20 > Brgds/Kaisern >=20 >=20 >=20