Archive for the ‘champuru’ Category
In Cell Block One of ESP
Wednesday, November 17th, 2010
Panopticon Penitentiary
Wednesday, November 17th, 2010
Where I Am Touring At This Moment
Wednesday, November 17th, 2010
Pistoletto’s Mirror Painting “Man Looking at a Negative”
Tuesday, November 16th, 2010
Pinholing at Philadelphia Museum of Art
Tuesday, November 16th, 2010
Stella piggybacking on the Speedy G
Tuesday, November 9th, 2010
Tonight’s Fun: Taking Apart 1890s Barrel Lens
Thursday, October 21st, 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….
