Nice photo, a pleasing composition. I would call that a spiral staircase. It's common terminology.
Paul via phone > On Jul 6, 2017, at 2:36 AM, Marnie (aka Doe) <eactiv...@comcast.net> wrote: > > Thanks, Alan. > > Don't know. Oddly I thought off calling it Spiral because the staircase with > fern made me think of sea shell. Cross-cut, with a denser center. I didn't > call it that because it was a "spiral staircase." GMT. Heh. > > Marnie aka Doe > >> On 7/5/2017 9:36 PM, Alan C wrote: >> I agree. >> >> I often wonder why "spiral" is used to describe such staircases. Spirals >> are actually 2D shapes (like a clock spring) wheras the 3D version is a >> Helix (like DNA). Some pundits say that a helix is simply a 3D spiral >> with constant radius. >> >> Alan C >> >> -----Original Message----- From: Mark C >> Sent: Thursday, July 06, 2017 6:04 AM >> To: Pentax-Discuss Mail List >> Subject: Re: PESO - Spiral >> >> Great image - the stairs, tiles and plant work together well, but the >> guy on the stairs nad the B&W rendering really seal the deal. >> >>> On 7/4/2017 6:56 PM, Marnie (aka Doe) wrote: >>> Also taken 2011. In Embarcadero Center, SF. >>> >>> I am inordinately fond of this photo, because normally when I do >>> "street photography" (i.e. people I don't know), they don't end up >>> where I want them. >>> >>> I was positive I showed this on PDML before, but have found no >>> indication that I actually ever did. I have shown it on Facebook. >>> >>> http://www.mapphotography.org/PAWS/pages/spiral.htm >>> >>> Comments welcome. >>> >>> Marnie aka Doe :-) > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
