Olympus announced their first m4/3 camera in June of 2009, christening the line of cameras "Pen" in homage to their well-liked half-frame 35mm SLR cameras of the same name. The Olympus lineup of m4/3 cameras now goes from entry level (E-PM3, or Mini) to enthusiast (E-PL5), to serious enthusiast (E-M5 and E-M1).
- Pen = rangefinder style cameras
- OM-D = DSLR style cameras
Overall Olympus mirrorless sales:
- 2012 fiscal year: 590,000 units
- 2013 fiscal year: 660,000 units (Olympus estimate)
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