Alphen aan den Rijn old council house. Two of two panoramas to show what the Pentax da 10-17mm f3.5 - 4.5 can do after being modified. This lens mod turns a full frame fish-eye lens for aps-c sensor cameras into (almost) a circular fish-eye for full frame sensor cameras. The lens mod is explained by Mr. florian Knorn in the following video: https://www.youtube.com/watch?v=Z2e_X2p3IX4 Where at first 8 photos were needed including zenith and nadir, now only a horizontal row of 4 photos are required to cover the full 360º sphere. This drastically decreases the required time to shoot a pano but at the expense of resolution. However this being a fish-eye zoom one can zoom in to 15mm and get the resolution back if it were required. Also less images means less potential stitch errors. Excellent stuff! I would like to extend my gratitude to mr. Florian Knorn for his excellent and free youtube tutorials on vr panoramas and last but not least my friend and highly skilled mechanical worker Kees Vogel for modding the lens for me.