The E-P3 has a higher maximum flash trigger voltage than previous models. This is great news for those who have the OM T-8, T-10, T20, T-28 and T-32 flash systems as these all have trigger voltages between 6V and 12V. (The Olympus Quick Auto 310 has a very high trigger voltage and must have the ISO trigger voltage modification done.) This is also good news for those who use a third party flash with trigger voltage below 24 V. From page 60 of the E-P3 manual. Observe the following precautions when mounting an external flash unit not designated for use with this camera on the camera hot shoe: Using obsolete flash units that apply currents of more than about 24 V to the camera hot shoe X-contact will damage the camera. Connecting flash units with signal contacts that do not conform to Olympus specifi cations may damage the camera. Use only with the camera in shooting mode M at shutter speeds slower than 1/180 s and at ISO settings other than [AUTO]. Flash control can only be performed by manually setting the fl ash to the ISO sensitivity and aperture values selected with the camera. Flash brightness can be adjusted by adjusting either ISO sensitivity or aperture. Use a flash with an angle of illumination suited to the lens. Angle of illumination is usually expressed using 35-mm format equivalent focal lengths.