Archived posting to the Leica Users Group, 2008/06/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Jun 17, 2008, at 8:46 AM, Lottermoser George wrote: > Peter's test shows us what this lens will do wide open, hand held, > by Peter, at a 360th of a second, with and without a filter. > > Locking the camera down on a solid tripod, stopping down to where > the IR wave lengths will also be in focus "may" very well provide a > different result. All of us with M8's could spend time testing our > various lenses, with and without filters, at various apertures, > focused on various subjects, with various amounts of IR present. > > When discussing sharpness and contrast camera movement and subject > movement must be absolutely removed from the equation (as much as is > humanly possible). > > Peter's test, while interesting and informative, certainly did not > reduce camera and subject movement to anywhere near zero. totally agree George, it's an important start. But before we get data under many conditions, we need one totally credible result under one condition... and after that, we can invent the wheel... Steve > > > Fond regards, > George > george@imagist.com > www.imagist.com > http://www.imagist.com/blog > Picture A Week - www.imagist.com/paw_07 > > > > On Jun 17, 2008, at 10:24 AM, Steve Barbour wrote: > >> what started all this is the vague memory of several of us (or was >> it confabulation?) that without IR filters, bw on the M8 is in >> fact slightly improved, sharper, more contrasty thanks to the IR >> rays, >> >> anybody know about this? > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information