This shot inadvertently summed up my best feelings toward the T*25 Distagon. Its very sharp in its focus plane as you can get the idea here. With the reported lack of a corrective 'floating' element, focusing closely into uncorrected territory starts to add a selective focus style motion blur from the edges, similar to a mild lensbabies effect (note the highlights on the leaves on the right hand side). While pure macro shooters may dismay at the 'edge-to-edge' sharpness lost in this fashion, I herald the unique possibilities it provides. Zeiss could easily have made this lens like so many others by adding the corrective element and restricting the minimum focus distance to emphasis its edge-to-edge MTF scores and simply had a safe wide angle (perhaps this logic was behind the 28/2) but it chose instead to create this lens with unique and interesting capabilities and I'm so glad they did!
For the artistic shooter, this Distagon is a lot of fun to use regardless of its focal length, just to see how it renders subjects.