Olympus hasn't cast the net far for components for the E-PL2 as it has the same Four Thirds type, 12.3 million pixel Hi-Speed Live MOS sensor as the E-PL1 (and probably the E-P2) as well as the same TruePic V processor.
The most significant changes that the E-PL2 brings over the E-PL1's specification are a larger screen with greater resolution (3in and 460,000 dots rather than 2.7in and 230,000 dots), an expansion of the non-technical Live Guide available in the iAuto mode to include the HD Movie mode and the Dramatic Tone Art filter. The maximum sensitivity settings has also been pushed 1 EV to ISO 6400, but this is accompanied by an increase in the minimum setting from ISO 100 to ISO 200.
Olympus has also revised the Pen accessory port, dubbed the Accessory Port 2 for the E-PL2, and introduced the Penpal PP-1 Bluetooth device to simplify sending images to smart 'phones, laptops and other enabled cameras. The device automatically resizes images and prepares them for uploading to your chosen social networking site.
As with Olympus's other Pen cameras, the E-PL2 offers ESP light metering which uses information from 324 zones, plus centreweighted, spot, highlight and shadow metering. Images may be captured as raw or JPEG files (or both simultaneously) in the usual PASM exposure modes. There are also 22 scene modes and six art filters (Pop Art, Soft Focus, Grainy Film,Pin Hole, DioramaandDramatic Tone).
Another significant change with the E-PL2 is more correctly attributed to its most popular kit lens, the Micro Zuiko Digital 14-42mm f/3.5-5.6 II MSC. Despite being slightly longer than the original Micro Zuiko Digital 14-42mm f/3.5-5.6 when it is collapsed, this new lens is a little lighter and shorter when fully extended. More importantly, the new optic is an MSC (Movie and Stills Compatible) lens so the auto focusing is quieter and faster than before.