Archived posting to the Leica Users Group, 2012/05/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]b) I meant LOSSY compression of course On Sun, May 27, 2012 at 4:28 PM, Richard Man <richard at richardmanphoto.com>wrote: > Or that > a) it's a pre-production firmware > b) the lossless DNG compression on the M9 depends on certain voodoo magic > about the image file characteristic (because in the end, it's compressing > 12 bit data down to 8), and such voodoo does not work on the monochrom data > as you will be throwing away dynamic range data, which is the raison d'?tre > ** <http://en.wikipedia.org/wiki/Raison_d%27%C3%AAtre> of the MM. > > > On Sun, May 27, 2012 at 4:08 PM, Dante Stella <dstella1 at > ameritech.net>wrote: > >> The cynical answer is that removing the compression option saved a couple >> hundred K of firmware size, allowing the company to downgrade the flash >> ram >> from 1gb to 512mb, thereby saving two dollars per camera and guaranteeing >> no major firmware improvements ever. >> >> The truth is probably that the low cost of SD memory eliminates one >> reason to compress. >> >> I'm just kidding about manufacturing cost savings. >> >> Dante >> >> On May 27, 2012, at 6:53 PM, John McMaster <john at mcmaster.co.nz> wrote: >> >> > One interesting bit (I thought) was that DNG compression is not >> available on the MM. If a full colour M9(P) can have it and it is regarded >> as lossless (although not called such) why not put it on a greyscale >> camera.... >> > >> > john >> > ________________________________ >> > From: John McMaster >> > Sent: Sunday, 27 May 2012 9:41 p.m. >> > To: Leica Users Group >> > Subject: Another MM write-up >> > >> > http://www.reddotforum.com/content.php/226-Leica-M-Monochrom-Review >> > >> > john >> > >> > _______________________________________________ >> > Leica Users Group. >> > See http://leica-users.org/mailman/listinfo/lug for more information >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > -- > // richard <http://www.richardmanphoto.com> > > > -- // richard <http://www.richardmanphoto.com>