Archived posting to the Leica Users Group, 2016/05/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Well, I just printed a 6 MP image from the Nikon D70 at A2 size for a recent Print Exchange, and unless you knew about it, there is no way you could have spotted it. Cheers Jayanand On Wed, May 11, 2016 at 11:11 AM, Frank Filippone <red735i at verizon.net> wrote: > Some of the "magic" is the printer drivers... which have gotten much better > in the last few years..... They up-scale for the ink jets (spitters), > which > have resolutions of much more than 360DPI.... > > I had a friend that was totally focused on these issues.... and the word > constipated comes to mind.... > > You are best off taking the image, then print it out using your chosen > SW... > the computer programs will figure it all out for you... > > I think I heard that a 4MP ( four, not forty) camera can print up to 8x10 > images with "popular" image acceptability....or maybe it was 5x7... in any > event. > > Go make images.... > > Frank Filippone > Red735i at verizon.net > Subject: Re: [Leica] Is this how pixels and dpi work? > > Image sensor to pixels, and pixels to printer dots, involve many image > conversion technologies that affect image qualities along every step of the > processing chain. You can't just map it one-to-one like you did. > > > On Tue, May 10, 2016 at 12:26 PM, Lew Schwartz <lew1716 at gmail.com> > wrote: > > > My understanding: > > A 40mp sensor (for example) produces information for 10mp points of > > capture due to the fact that the Bayer filter takes groups of 4 input > > sites (GRGB) to produce a single point of capture record. > > > > If we have a full frame sensor, that would produce (@2:3) a capture of > > aprox. 2582p x 3873p > > > > Assuming > > 1. that the printer & software editors output 1 capture datum to 1 > > dot of print (&I understand that this is not necessarily the case) > > -and- > > 2. that we output to the printer at 360 dots/in > > > > We would have a print of aprox. 7 x 11 inches. > > > > So is the up & down sizing so good that I can produce images of just > > about any size I want? What's the practical limit on the up side? > > > > -Lew Schwartz > > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >