subject: Sony NEX-5 Battery NP-FW50 Review [print this page] Sony is also taking the unusual step of offering screw-on adapterlenses for its 16mm F2.8 pancake lens (they attach to the bayonet of the lens so can't be used with other lenses). In a manner familiar from compact cameras, it will be possible to adapt the lens from its usual 24mm equivalent field-of-view using either an ultra-wide adapter taking it to 20mm equivalent or a fisheye that gives a 16mm equivalent view
