mount, Konica Hexanon AR-mount, Minolta SR-mount (MC/MD), Leica M and screw mount, Nikon F-mount (non-G), Pentax K-mount (non-DA), Olympus OM mount, T2 screw mount and Minolta/Konica Minolta/Sony A-mount lenses. The E-mount flange register is so short that it is possible to mount 45 mm or longer-focal-length non-focusing enlarging lenses on the NEX body, with the use of an intermediate focusing helicoid behind them. Certain third-party mechanical adapters also provide circular control rings that provide some mechanical control of the aperture of Nikon G, Pentax DA and Canon EF lenses, as these do not have a mechanical aperture control ring on their lens barrels. Model definitions The incomplete model number of NEX-3/NEX-5 series may include letter(s) at end. The definitions are: C: Not compatible with Eye-Fi function (NEX-3C and NEX-5C only) A: Supplied with E 2.8/16mm (SEL-16F28) D: Supplied with E 2.8/16mm (SEL-16F28) and E 3,5-5,6/18-55mm OSS (SEL-1855) H: Supplied with E 3.5-6.3/18-200mm OSS (SEL-18200) K: Supplied with E 3.5-5.6/18-55mm OSS (SEL-1855) L: Supplied with E 3.5-5.6/16-50mm OSS (SEL-1650) B: Body color is black N: Body color is black /N: Body color is gold (NEX-5D/N, Japan only) /P: Body color is pink (NEX-3D/P, Asia only) R: Body color is red S: Body color is silver /T: Body color is brown (NEX-3D/T, Asia only) 50i: 50 frames interlaced model 60i: 60 frames interlaced model For example, NEX-5CK/B 50i is a NEX-5 supplied with E 18–55 mm zoom lens, not compatible with Eye-Fi function, body color black, and with 50i (not 60i) video support. See also Sony NEX-7 References External links SonyStyle product description – official Sony website Sony UK product presentation – official Sony UK website DP Review (Digital Photography Review) – June 2010, an in-depth review of the two cameras Pop Photo Review – May 2010 review NEX-5 NEX-5