Micro 4/3 CamerasInitially Micro 4/3 cameras are all evil digital SLRs, BUT evil digital SLRs that can take an incredible amount of lenses via adapters, most importantly LEICA M and LEICA SCREW MOUNT LENSES, not to mention Canon FD, Olympus Pen F, and even classic Contax/Nikon Rangefinder lenses!
The Micro 4/3 forum is here at RFF because via adapters Micro 4/3 SLRs offer an inexpensive way to use rangefinder lenses on digital cameras. Not everyone wants to spend $6500 for a Leica M8.2, $4500 for a Leica M8, or even $1600 for a used Epson RD1 in order to use their Leica lenses on a digital body. Using Leica M or screw mount lenses on a relatively inexpensive digital body is a big deal. Who knows, in time we might see a Micro 4/3 rangefinder in Leica M mount. Take note the Micro 4/3 format is NOT the same format as 4/3!
Also take note the Micro 4/3 SLR cameras (even if a EVIL Electronic Viewfinder Interchangeable Lens camera) can use standard Leica M lenses and still focus to infinity. In SLR terms, the adaptability of the Micro 4/3 cameras is also a big deal.