Optically, this is an amazing piece. I also have the 24mm 1.4G and 85 1.4G which are all equally as impressive, but I find this 35mm focal length to be much more useful as an "everyday" lens. 35mm on a full frame body can pass as wide angle for landscapes and architecture as well as a portrait lens. And because of its close focus ability, it serves as a semi-macro lens as well with about .2X magnification and close focusing to about 1 foot. Background defocus is also more ..