<p>The replacement for the Olympus E-5 has been rumoured for some time, with much attendant speculation as to the exact form the camera would take. Some thought it would be a four thirds system camera, either without a mirror or with a pellicle one. Others that it would be a micro four thirds system camera, with a clever new adapter to allow the use of four thirds lenses, possibly including some sort of pellicle mirror to allow phase detection - like the Sony Alpha to NEX mount adapter.</p><p>The reality is that the new Olympus OM-D E-M1 is rather more conventional. It is, in fact, a micro four thirds system camera, that relies on the existing MMF-3 four thirds to micro four thirds mount adapter to mount four thirds lenses. Of course, the issue with this is that the existing contrast-detection AF technology may be somewhat slow when focusing lenses that aren't designed to be used with it.</p><p>To speed up focusing with four thirds lenses, Olympus has come up with a new sensor design that enables phase-detection AF on the camera sensor.</p><p>The E-M1 on display was the final version and I was allowed to use it for a day's shooting. Here are my thoughts. Olympus OM-D E-M1 - Key features</p><p><a href="http://www.amateurphotographer.co.uk/reviews/compactsystemcameras/129439/1/olympus-om-d-e-m1-hands-on-review">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.imap.reviewstudio.net/679-olympus-introduces-the-om-d-e-m1-its-new-flagship-camera">Olympus introduces the OM-D ...</a> (ReviewStudio.net)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dwXrMnYl24RRlBMR3T1WQ3XWn_lBM&ned=us">5 additional articles.</a></p>