The 55-210mm E-mount lens is not for sale yet, but I saw it displayed at a local Best Buy store this week. With its silver and black half-metal construction, it looks rather handsome. It looks smaller than I envisioned it. It is less than 1/4" longer than the equivalent Samsung NX 50-200mm zoom; but about 1/4" smaller in diameter; and about 70g lighter. The decision to go for smaller diameter (and the same 49mm filter size as other E-mount lenses) is probably the reason the aperture range of 4.5 - 6.3 being 1/3 stop smaller than the typical of 4 - 5.6. But it does make the lens appear slimmer.