Archived posting to the Leica Users Group, 2012/10/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi, Jeff. You helped me once before with regard to avoiding the importing of duplicates. I seem to specialize in overlooking items near the top of the r.h. panel of LR, as I failed to notice the appearance of a print profile pop-up when I checked marked the soft proofing check box. Richard Man pointed that out. So I tried an experiment. My monitor is an iMac calibrated with a Spyder Express. My printer is pretty good, though not to professional standards: an Epson Artisan 50. For this relatively inexpensive printer, Epson provides profiles only for Epson papers. My experiment was to print the picture of the orchids that I posted last week as a Friday Flower. First I established, as expected, that there was no discernible difference between telling the LR print module to use 16 bits or 8 bits. Then I compare Perceptual to Relative. The orchids had a slight bit more red in their purple hue in the Perceptual case. I then soft proofed. A few bits of the green and all of the orchid petals were marked as out of gamut. Small changes in purple hue did not help the petals. A small reduction in saturation put everything in gamut and when printed, the petals looked paler, the green looked unchanged. Then, I decided to compare the prints to the picture on the monitor. The prints were viewed under an LED light. I now decided it's time to throw in the sponge. While the difference between Perceptual and Relative, for this picture, was extremely subtle, the purple on the prints was clearly much more red than that on the screen. Strangely, all the background colors: wall, furniture, air inlet grate matched quite closely between monitor and screen, and, in general, I've felt in the past that my prints pretty well matched the monitor. C'est la vie. Herbert Kanner kanner at acm.org 650-326-8204 Question authority and the authorities will question you. On Oct 10, 2012, at 2:57 PM, Geoff Hopkinson wrote: > And you need to have created and installed those profiles from elsewhere > before you can select them for printing or soft proofing. Those may be the > 'canned 'profiles from the paper manufacturers or custom profiles. > Notice the perceived difference when a 'white' border is displayed in that > soft proof mode though. > > Actually the new LR changes effectively duplicate Photoshop's printing > capabilities with more smarts added (resolution and colour space background > automation for two). > With most monitors in any case the luminance and contrast will not echo > well what the print displays (not even considering the transmissive vs. > reflective conditions). Few monitors can cover more than sRGB as well but > good inkjets can approach AdobeRGB. > A print on good Photorag might have a contrast ratio of maybe 150:1 > compared to maybe 10000 :1 of a common LCD screen. > > High end monitors like the best Eizos and NECs confer a lot of advantages, > including in these areas but maybe that is another conversation. > > Cheers, > Geoff > http://www.pbase.com/hoppyman > > > > On 11 October 2012 06:39, Richard Man <richard at richardmanphoto.com> > wrote: > >> Herb, on the upper right of the Develop panel, if you enable "Soft >> Proofing," it has "Create Proof" and you can select which profile you are >> soft proofing. Most of the time, you would select your paper/printer >> combination that you are printing on. >> >> On Wed, Oct 10, 2012 at 1:20 PM, Herbert Kanner <kanner at acm.org> wrote: >> >>> Even after seeing Adobe's tutorial on the subject, I'm really puzzled. >>> Allegedly, Soft Proofing is supposed to show you areas of a picture that >>> are "out of gamut" and enable you to make minimal changes in hue or >>> saturation to put those areas back into gamut. But doesn't gamut depend >> on >>> media? That is, doesn't the gamut that can be presented depend, e.g. on >> the >>> printer/paper combination or the limitations of a monitor? >>> >>> Since I'm viewing the picture on a monitor, what I get to see is, by >>> definition, in gamut. Just for fun, I clicked the Soft Proofing box on >> the >>> recent picture of some orchids, The blossoms were indicated to be "out of >>> gamut" and went into gamut after I reduced the saturation to the extent >>> that they were pale ghosts of their former beauty. >>> >>> The Soft Proofing option is in the Develop Module, which, to my >> knowledge, >>> has no way of specifying the profile of a printer/paper combination. I >>> can't image how one would effectively use Soft Proofing. >>> >>> Herbert Kanner >>> kanner at acm.org >>> 650-326-8204 >>> >>> Question authority and the authorities will question you. >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> >> >> -- >> // richard <http://www.richardmanphoto.com> >> >> _______________________________________________ >> 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