Archived posting to the Leica Users Group, 2008/05/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Qiao Li <qiao_li@mentor.com> wrote: > >> 560mm f/6.8 @f/6.8 (a 1970 design) on the R8/DMR: >> http://wildlightphoto.com/birds/phasianidae/witu19.jpg >> http://wildlightphoto.com/birds/phasianidae/witu19crop.jpg >> >> http://wildlightphoto.com/mammals/artiodactyls/dash01.jpg >> http://wildlightphoto.com/mammals/artiodactyls/dash01crop.jpg >> >> 80-200mm Vario-Elmar @ 180mm & full aperture on Provia 400F: >> http://wildlightphoto.com/birds/strigidae/eeow02.jpg >> http://wildlightphoto.com/birds/strigidae/eeow02crop.jpg > > Could you elaborate a little on how these pictures showed that DMR @ > ISO400 is preferrable than Provia 400F? > > To my untrained (not due to modesty) eyes, the Provia 400F picture > seems to have more noise. But the DMR photo seems to show quite some > aliasing, like the reflection from the turkey's eye, the hair at its > back, and the highlights on the red caruncle(?)? Be sure that your web browser is showing the turkey photo at full resolution. IE and Safari both will re-size the picture to fit the window, resulting in visible aliasing. Safari will then show you a magnifying lens with a "+" in the center; click on the picture and it will be full resolution. IE will (eventually) show you a re-sizing icon in the lower right corner, click on this to see the picture at full resolution. The grain/noise of 400F is one of the most significant problems I have with it. The detail is more limited by the grain of the film than by the DMR's sensor so I can't enlarge & crop with 400F as much as I can with the DMR. Film grain's random pattern acts like an anti-aliasing filter. I should also try Provia 400X. Doug Herr Birdman of Sacramento http://www.wildlightphoto.com -------------------------------------------------------------------- mail2web - Check your email from the web at http://link.mail2web.com/mail2web