Hi Adrian, I am currently shooting the OM1 mk2, also in an AOI housing with SUPE D-Pro strobes. I use Standard Live View for all underwater photography, and I shoot a fair bit of macro. I too have found the LCD can be dark in some situations, and to compensate I increase the brightness of the LCD screen. You must always remember though that it is not giving a true indication of exposure, so to assist me in this regard I also have a histogram included on my LCD information, and use that to adjust my composition, lighting and exposure. I find it helps me also finding smaller subjects. I have found a similar situation to @Chris Ross in that images tend under-exposed slightly, but thats how I like my images, so it doesn't worry me too much. I have been using the AOI LCD viewfinder accessory attached to the LCD bracket of the back of the housing for some time now, and have got to the point where I would not dive without it. It does take some getting used to though. I found using the camera viewfinder itself is a quite limiting, as @Chris Ross said.