Cell in Cell Block Four
17 November 2010
In Cell Block Seven
17 November 2010
In Cell Block One of ESP
17 November 2010
Panopticon Penitentiary
17 November 2010
Where I Am Touring At This Moment
17 November 2010
Pistoletto’s Mirror Painting “Man Looking at a Negative”
16 November 2010
Pinholing at Philadelphia Museum of Art
16 November 2010
Stella piggybacking on the Speedy G
9 November 2010
Tonight’s Fun: Taking Apart 1890s Barrel Lens
21 October 2010I was curious about the rear lens elements of the old William, Brown, & Earle Philadelphia lens I have so I took it apart. Suspecting this was a Petzval design, I expected two air-spaced elements of a certain shape (there is), but there is also on the innermost surface a third very thin (and chipped) convex lens. It seems auxillary, but I wonder what it exactly does. Likely some small correction or perhaps a power booster. In any case I might try to shoot without the rear elements just to see what’ll happen….
