http://g-ecx.images-amazon.com/images/G/01/electronics/cameras/dslr/sony/2011/nex5n/Adapter._.jpg
Accepts Sony E-mount lenses
Compatible with Sony's E-mount series of smaller, lighter lenses designed specifically for a compact interchangeable lens cameras. Opens up a world of creative options.
Phase Detect AF for E-mount bodies w/ adapter
Both the LA-EA1 and EA2 adapters (sold separately) allow you to attach A-mount lenses to your E-mount camera. However, the LA-EA2 is the world's first adapter to leverage Sony's exclusive Translucent Mirror Technology to provide super fast and accurate Phase Detection AF as well. The LA-EA2 adapter has a translucent mirror built-in between the two mounts that directs a small portion of the light to the phase detection AF sensor in the bottom of the unit.
25-point Auto Focus
25 sensors cover a very wide area of the scene, for accurate focusing even when the subject is far from the center of the frame.
from
http://www.amazon.com/Sony-NEX-5N-Compact-Interchangeable-Touchscreen/dp/B005IHAIMA
