hi, On Sun, Dec 18, 2016 at 10:02 PM, Matthias Bodenbinder <matth...@bodenbinder.de> wrote: > Am 18.12.2016 um 07:26 schrieb Tim Rolph: >> Hi I Just ran a test to compare the same image on PS and dt and PS 10 was >> equal to 91 in dt and PS 6 was equal to dt 70. >> This was just one image tested but the file sizes came out the same. >> Hope this helps. >> >> Tim. > > If that is the case the math is easy: It is 5% for every point in PS > > 12 = 100% > 11 = 95% > ... > 6 = 70%
i very much doubt the math will work out like this. there is some quality value in libjpg, but there's also the option when to switch to sub-sampling chroma and such. as you may have figured, darktable doesn't usually do this (starts at some arbitrary point i think it is < 90%). i would expect the photoshop scale to include similar arbitrary non-linear decisions. this may actually lead to a situation where you can't map the scales at all. cheers, jo ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
