and the shot was at f22.
As light source a 375nm UV LED was used plus that wonderful Baader 2" U filter to allow shots in daylight conditions. The image is unaltered except some modification of the white balance to allow for some sepia colors, which I currently find quite pleasant.
The second picture is a 1024pix crop from the above shot to demonstrate the nearly 3D resolution of that fabulous lens.
Stay tuned, more will follow on that fascinating subject...
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos>
