répéré sur cette page du site olympus europe. c'est au rayon "shutter", je cite:
et hop là, encore une mention là:Ranging from 1/4000 sec. to 2 sec. in the program, aperture or shutter modes and up to 30/60 sec (E-300/E-1, E-500, E-330, E-400)
Processing
E-300/E-500/E-330/E-400: TruePic Turbo Developed by Olympus, the TruePic technology optimises the image information captured on the CCD before the data is saved.