Three Flutes

I did some more images with the SW lens.  I usually stear clear of naval gazing but I included some questions that I've been mulling after reading some of what Alvin Langdon Coburn wrote nearly 100 years ago.  The rest of the images are here if you're interested.  Funny thing is I'm not nuts about most of Coburns pictures.

http://tonopahpictures.0catch.com/Secret%20Weapon%20Lens/More_SW_Lens.html

The lens is the front element from a type of modified petzval that theatres used to use.  It has a big magnification at the front that gives a larger f1.9 aperture number.  Used alone it is just a grossly uncorected doublet that throws a lot of light everywhere.  It focuses at about 7 inches but the defocus happens so fast that you can get a total merge of everything in just a few inches.  It can't "see" to the end of the 3 flutes which was only about 5 or 6 inches from the point of focus.  More techy stuff.  I used Efke 100 film rated at 100.  Exposure with normal overhead kitchen lighting was 1/1.6 sec at an effective f10.  The D200 has that setting so I simply "listened" to the Nikon about 5 or 6 times, practiced with the packard a couple of time, and squeezed the bulb.