Archived posting to the Leica Users Group, 2012/08/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Every io cycle on a compressed file has to go through another layer of software to handle the decompression. On Sun, Aug 12, 2012 at 7:07 AM, John McMaster <john at chiaroscuro.co.nz> wrote: > Might be the compression (14 bit) then, this is in LR4.1, may try some > uncompressed..... > > john > > -----Original Message----- > > I have no problem on my Win7 machine with 16 GB RAM with uncompressed 14 > bit > D800E files (75-80MB). > Cheers > Jayanand > > On Sun, Aug 12, 2012 at 3:41 PM, Chris Crawford < > chris at chriscrawfordphoto.com> wrote: > >> You've got your RAM maxed out, then. I wonder why D800 files are so >> cumbersome when you find that 500mb Hasselblad scans aren't? That's weird. >> I haven't got a D800 to try it with, but my Canon 5DmkII files process >> fast enough. >> >> -- >> Chris Crawford >> >> On 8/12/12 3:51 AM, "John McMaster" <john at mcmaster.co.nz> wrote: >> >> >I have dealt with 500MB 'blad scans with no issue. For those who care >> >I have 32GB RAM, SSD and RAIDed eSATA so no slouch, D800E files are >> >much slower to process.... >> > >> >How do you find them in the Windows space Jayanand? >> > >> >john >> >________________________________________ >> > >> > >> >I have a Mac Pro with dual quad-core processors. Mine are 2.8ghz. I >> >work with scanned film, which gives much larger files than a 36mp >> >camera. 16bit RGB scan of a 35mm neg is 128mb and a 6x6 neg is 470mb. >> >That's with no editing or layers, which make the files a lot bigger. My > machine is FAST. >> >I have not looked at it to see the % of CPU being used, but I know it >> >runs filters and stuff extremely fast. Almost instantly on 35mm and >> >in a few seconds on the giant medium format scans. >> > >> >My processors are not that much faster than yours, but I do have 12GB >> >of RAM. I wonder if more RAM would help you, it did speed mine up >> >quite a bit when I upped it from 4 to 12 GB. >> > >> >-- >> >Chris Crawford >> > >> >On 8/12/12 3:04 AM, "John McMaster" <john at chiaroscuro.co.nz> wrote: >> > >> >>It is far slower to work on D800E (lossless compressed) 40MB files >> >>than >> >>M9 >> >>(uncompressed) 36MB files. >> >> >> >>I have a reasonably grunty machine so I went looking at what the >> >>bottleneck is...... >> >> >> >>Mid-2009 Mac Pro (2x 2.26 quad-core Intel 5520 CPU) was running at >> >>over 1300% CPU (16 threads available) briefly while doing minor >> >>changes, be aware of this limitation if thinking of upping your >> >>camera MP ;-) >> >> >> >>john >> >> > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information -- -Lew Schwartz