I've got an itch, and I've had it for a while now. In fact almost ever since I swapped over to the X-Pro1 from a full frame Canon 5D I've had that itch. When I swapped my kit over, I bought the X-Pro1 body along with a 35mm prime lens and 18-55mm zoom lens, which in its own right is very highly regarded. However, as someone who came from an all prime line up I still have a deep affection to prime lenses and this is the root cause of my itch. I still have a yearning to stay with an all prime set up, and as much as I appreciate the quality and convenience of the zoom lens, I have an itch for the original 'holy trinity' of Fuji prime lenses, which is the 18mm f/2, the 35mm f/1.4 and the 60mm f/2.4.
Of course, some would say this is a bit old hat now with the release of updated prime lenses from Fuji such as the 14mm, 23mm and 56mm, but for my level of photography these are somewhat overkill.
The other lens which has caught my eye recently is the Fuji 27mm f/2.8. A much maligned pancake style lens, this is by far the smallest of lenses currently available from Fuji, and appears to suffer some crisis of confidence as to where it fits into the line up.
As a 41mm focal length lens it's a slightly strange focal length. However being a pancake style lens it's ideal for keeping the X-Pro1 size to a minimum, and producing excellent results across a number of different images, from portraits through to street style photography. It's also really well priced, thanks to its relative lack of popularity.
Although the lure of an all singing, all dancing 23mm or even 56mm lens is tempting at this stage, the idea of a prime set up of 18mm, 27mm, 35mm and 60mm is somewhat tempting - maybe even tempting enough to forego the 18-55mm zoom lens and go back to zooming with the feet!