I wonder - how useful is the fully manual exposure mode on modern digital cameras? When I used to use film cameras, I had a selenium cell meter and a grey card, and would always set the shutter speed and aperture manually, both on my very old and completely manual Canon FX and on my less old and somewhat more automatic Canon T70. The metering options on the T70 were centre weighted average and partial, and it had manual, program and shutter priority modes. Despite the relative ease of the program or shutter priority modes, I almost always used the manual mode to get accurate exposure with the slide film that I used. This I found worked well, and I rarely had a poorly exposed photograph. Now, I use an E-P3, and almost always use RAW mode, processing in Lightroom. I can see the photograph that I am about to take and the photograph that I have just taken on the OLED screen on the back of the camera (or in my VF-2 if I am minded to use it). The E-P3 has a sophisticated evaluative metering system that gets accurate exposure much more often than the centre-weighted average of the even the best 1980s cameras. I have my thumb wheel set to the exposure compensation feature, and I can at the press of a button see the image's histogram. If the in-built metering has got it wrong, I can see the error on the live preview and/or the histogram and correct it with the exposure compensation wheel. If I want a particular aperture/shutter speed for depth of field or motion blur related reasons, I can either use aperture or shutter priority mode, or adjust the aperture/shutter ratio with the jog wheel in program mode. I no longer use a selenium cell meter and grey card. Why, then, do many people still use fully manual exposure on modern digital cameras when using live view and not an optical viewfinder? I am not trying to criticise, I should add: I am just curious as to whether I am missing some useful technique. I presume that even those who use manual exposure do not use a hand-held light meter (not least because the ISO is not calibrated accurately on digital cameras, except internally)? Also, on the subject of auto exposure and metering, does anyone use the centre weighted average or spot metering modes of Micro Four Thirds cameras? I have never found a situation in which I might need to do so.