Archived posting to the Leica Users Group, 2005/04/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks for the constructive comments Henning, all were shot hand held by a still slightly woozy geophysicist (suffering from the longevening before in a much too good restaurant). As I was on a business trip and not really intending to take anything other than snapshots WYSIWYG. With a head full of options and ideas of how to enhance the production and output of geothermal wells in the Tuscany area, and how to apply geophysical processing and interpretation methods to geothermal reservoirs, as opposed to oil and gas criteria, I wasn't really concentrating - just snapping. cheers Douglas Henning Wulff wrote: > At 1:34 AM +0200 4/25/05, Douglas Sharp wrote: > >> Hello all, >> >> Some early morning shots of Pisa, Italy. Leica M6 + Voigtlaender 15mm. >> Please don't point out the "verticals" (grin). >> http://gallery.leica-users.org/New-Old-Pictures/Image3_4_edited_2 >> (Palazzo in the shade) >> http://gallery.leica-users.org/New-Old-Pictures/Image4_1_edited_2 (The >> famous tower) >> http://gallery.leica-users.org/New-Old-Pictures/Image3_3_edited_2 >> (Early bird and the tower) >> http://gallery.leica-users.org/New-Old-Pictures/Image1_8_edited_2 >> (Basilica) >> http://gallery.leica-users.org/New-Old-Pictures/Image1_7_edited_2 >> (Tower and Basilica) > > > Hi Douglas, > > It's interesting to see Pisa, but there are some disturbing things about > the pictures: > > First, Pisa is definitely a place where you have to make sure your > horizon is straight and level, because that is what your pictures of the > tower reference to. > > Secondly, when you correct for verticals (ie, reducing keystoning when > your film plane is not parallel with the subject) make _very_ sure you > don't overcorrect. When shooting architectural subjects with a shift > lens or with a view camera, the basic rule is that you can correct up to > having parallel verticals, but never overcorrect. With strong > correction, it looks best if you back off a bit and leave a slight bit > of keystoning. > > Only Image1_8_edited_2 doesn't show either of these problems. A way that > you can tell if you've over corrected is if the top of the tower is > wider on the picture than the bottom, if both are in fact the same width. > > If you've used a lens like the 12 or 15, and have just cropped the > photos to get these pictures, then you aimed the camera below the > horizon. That will produce the same effect. >