As my ultra-wide zoom is my least used lens (after the vile 85mm) my intention is to have just the 20mm and get rid of the zoom. But would 20mm be wide enough? I don't like the curvature and edge distortion that anything wider than 18mm gives, so my reasoning is that if I need wider than 24mm then 20mm should do the job.
the shots so far. Quite what the pictures are about I'm not too sure though!