Many X-shooters will wonder if there is any point in upgrading to this lens from the 18-55 f2.8 - 4 . As I have now done exactly that I can pass on my thoughts.
The 18-55 is a very good lens capable of giving first class results, the 16-55 betters this both in the extreme corners at f2.8 ( 18mm ) and at the longest focal length of 55mm. At around f5.6-f8 in the middle focal lengths there is not a lot in it, the 16-55 having the edge.
You must remember of course that the 18-55 has the advantage of image stabilisation which works well. I found by 2 to 3 stops.
The lens is not too heavy or bulky compared to my previous nikon gear but still a little large for the smaller Fuji cameras ( ie XE1/2 ). On the XT1 the lens feels well balanced although a grip is recommended. The performance of this lens is amazing - at 16mm wide open all the way to 55mm at all apertures with the exception of f22 where diffraction enters a little. For Jpeg shooters the XT1 and the "LMO" will counteract that.
The lens of course is weather sealed, this together with the extra wide angle reach and superb performance makes it well worth the money. Do not forget that as there is no
image stabilisation a tripod may be needed in low light situations if you wish to use low ISO.
