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Heavy Chocolate Brown Profile?
I'VE POSTED THIS ON THE B&W SITE AS WELL.
I'm sorry to say that I don't have an eye-one, only an X-Rite 400 densitometer. I've switched from a 7500, which I've had monumental clogging problems with to a 2200 with Epson Ultracrome inks. I do not believe I can construct a heavy chocolate brown profile for this ink set with a Densitometer. Is there any one out there who is into making profiles who could add it to the files or who would be willing to make one for me for a price? You could contact me off group if you have great experience doing this. Otherwise, is there a spectrometer, which I could use successfully to make profiles with Ultracrome, or MIS equivalent inks, which would not cost me $1,500.00? Thanks, John H P.S. I am presently printing on Mohab Entrada Natural although I'm looking at Innova papers as well. JH |
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Re: QTR on Epson Velvet
Bill Cheadle
I second that observation Diane...I just started using VFA on a Pro4000 and have used the EEM curves with great satisfaction, though the final output seems a bit warmer than the EEM proofs. Knowing that, a little experimentation will correct that in future prints.
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Diane Fields wrote: I used the EEM curves with it since I use EEM as a proof paper for Velvet. See what you think--I've only done 2 on Velvet so far so I don't want to make any pronouncements about it yet. |
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Re: Custom Curves
Steve S.
Donald, you must have read my mind because I was about to post the same question on this forum. ?I really hope someone can provide some?answers to the issues you've listed as it would greatly help me as well.
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sauganashkid wrote:
Do you Yahoo!? Plan great trips with : Now |
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Re: QTR on Epson Velvet
Diane Fields
开云体育I used the EEM curves with it since I use EEM
as a proof paper for Velvet.? See what you think--I've only done 2 on
Velvet so far so I don't want to make any pronouncements about it
yet.
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Diane
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Custom Curves
sauganashkid
I find the HELP information jargon on CURVE CREATION in QTRgui to be
generally incomprehensible. Not that it would do me much good even if I could understand it because I don't have a densitometer or spectrophotometer which I believe are essential tools required for creating accurate curves I do essentially all of my printing on an Epson 2200 with Epson UC ink and either Epson Watercolor Paper-Radiant White or Velvet Fine Art Paper. Using either of these two papers and the canned curves that came with QTR in the combination 70% UC-EEnhMatte-coolSe and 30% UC-EEnhMatte-warm I get what I consider to be acceptable quality neutral tone ptints. What I'm wondering is, could I do any better if I had custom made curves specifically generated for the two papers I actually use in place of the canned curves for Epson Enhanced Matte Paper? Is there any possibility that the family of curves that came with QTR will be expanded in the future to include Velvet Fine Art and Watercolor Paper? Is there any one who has created custom curves for these papers who would be willing to share them with others who for one reason or another aren't capable of doing the job for themselves? Is there any particular place one can go to to find other custom curves that can be downloaded and used with QTR? Donald |
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Re: 'Creating Curves For Dummies'
Djon
Depends on what you mean by "optimal." Is your goal a fine photo print or densitometry data? This site is driven mostly by the fine folks who resonate to the digital/jargon side and make all this possible...not Dummies. Xerox Parc addressed the Dummies issue for Apple and Microsoft and the rest of us... :-) PLEASE! YES! |
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'Creating Curves For Dummies'
SteveZ
I've been using Roy Harrington's QTR for about a week and a half now
with reasonable success mostly experimenting with Epson Enhanced paper.I think I have a good understanding of the basic operation including the basic settings with the QTRgui,Ink limit adjustment, gamma adjustment, etc. I've read the QTRgui "Help" info and it's easy to understand and straightforward. But earlier this evening I felt adventurous and started reading Tom Moore's tutorial on 'Creating Custom Curves' and that was the beginning of the end of my comprehension. It seems I'm having a real problem grasping the concept and understanding of the technical aspects (terminology like descriptor files, linearizations, densitometers, quadprofiles, etc are confusing the heck out of me). So now I have two questions: 1) Is the 'custom curves' application really necessary for optimal results with the QTR? It seems that just about everybody on this forum has adopted the practice so there must be something to it. 2) Does anyone know where I can find a more simplistic tutorial on this topic....a Creating Custom Curves for Dummies explanation? I want to continue to learn more about QTR and upgrade my skills for producing better quality digital black and white. Looking forward to hearing back from you. |
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Re: need help
Scott Graham
If you want help, you have to provide information.
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Sounds like you must be on a PC? etc? Mac and PC are moderately different in this case (QTR) Scott --- In QuadtoneRIP@..., "jessiefrancavilla" <brandywineriver@h...> wrote:
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Re: enhanced matte cool curve
Scott Graham
I did do the reduced modification of LC=LM=20 and it is about perfect, maybe slightly
blue and a bit dark compared to the Epson driver. Will next reduce LK a bit as you earlier suggested. If that isn't perfect, will try the mods you suggest below. I suspect that a bit less LK will make it great though cuz it is so close. Interesting how ones opinion can change: I had thought of the Epson driver print as very cold; now it looks a bit warm compared to LC=LM=20 with the "20" print being cold neutral. or is the Epson cold neutral and the "20" print a bit blue? sigh... will take a bit of relooking as time passes to decide. Both nice though ("to date") Thanks Scott --- In QuadtoneRIP@..., Daniel Staver <daniel@p...> wrote: You can try to change GRAY_GAMMA (midtones), GRAY_SHADOW (shadows), andprint because Icomes out a bit blue which is great, easyjust learned a ton. :) Likewise fornumber to change for that? or just reduce the ink limit? LM. |
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Re: enhanced matte cool curve
You can try to change GRAY_GAMMA (midtones), GRAY_SHADOW (shadows), and GRAY_HIGHLIGHT (highlights). Higher values make that part of the curve brighter, lower values darker. Gamma will usually stay between 1 and 2 somewhere while the other two can be anything from 0 to 300 or possibly even more.
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I honestly don't know how well it works to tweak these values with linearization in place. You're supposed to tweak them first and do the linearization as a last step. You can try and see how it works. If the results are horrible switch off linearization and try again. You can actually pretty good curves without linearizing. I've made a couple of curves which I haven't bothered to linearize simply because I already get great prints from them just with the adjustments mentioned above. -- Daniel Staver Hi John and Dan, |
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Re: enhanced matte cool curve
Diane Fields
开云体育I'm watching this and learning too--I don't
have time for this or next week to try, but find the ability to tweak a curve a
terrific boon.
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Keep us posted.??
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Diane
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Re: enhanced matte cool curve
Scott Graham
Hi John and Dan,
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I went with the lighter modification below as a start. Installed it and tested. The print comes out a bit blue which is great, because I can easily blend it with the warm one to get just what I want. And also because I just learned a ton. :) It did make the print overall too dark though---as might be expected. Is there an easy number to change for that? or just reduce the ink limit? as a start will re edit the curve to an intermediate effect, maybe LC=20 or 25. Likewise for LM. Bottom line is that blue is good, allows flexibility, and I am on my way. Thanks Scott --- In QuadtoneRIP@..., "John Vitollo" <jvlist@c...> wrote:
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Re: enhanced matte cool curve
Scott I edited the cool curve for you. I just boosted the LC and LM Limit from 12 to 30. I
haven't tested it though. You could edit the file yourself or email me and I'll send you the file. On the Mac.... Open the file - "UC-EEnhMatte-cool" - that's in "4000-UC" folder and change the LC and LM Limits as below: LIMIT_K= BOOST_K=55 LIMIT_C=0 LIMIT_M=0 LIMIT_Y=0 LIMIT_LC=30 LIMIT_LM=30 LIMIT_LK=36 |
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Re: enhanced matte cool curve
Scott Graham
Hi Roy,
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so if one is writing a "curve" from scratch does one write a "curve descriptor file, .quad) and convert it to an "ink descriptor file" for actual use? except when I open a "curve" in "Profiles" that is apparently an "ink descriptor" file, the first line of it says "curve descriptor". maybe I am too old for all this? or what is the difference between a "curve descriptor" and an "ink descriptor"? Aha! reading pdf's as I write this: so is an "ink descriptor" file sort of the human readable form, and what I would write or edit, and the "curve descriptor" file the machine (printer) readable form? and thanks for all the help Scott --- In QuadtoneRIP@..., Roy Harrington <roy@h...> wrote:
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Re: enhanced matte cool curve
Scott,
On looking at Daniel's download, he's got two files. A .qidf and a .quad 1) You can just drag the .quad to CurveDropBox/Quad4000 and Run-Install-Curves or 2) Make yourself a folder MyQuad4000. Put the .qidf in it and rename .qidf to .txt Copy the Install4000 from the main distribution. Just run Install4000 now, it installs any curves (.txt files) in the same folder. This sets you up to be able to edit the .txt file and do your own curve making. Roy On Wednesday, April 13, 2005, at 12:09 PM, Daniel Staver wrote: - Roy Harrington roy@... Black & White Photo Gallery |
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Re: Mac version 2.2a?
Yes, there's a new Mac release 2.2a.
The changes are: 1) Packaging Issue first. It contains all the Curve Design programs so you no longer have to download an old version to get them. I also fixed up the web page to clean things up a bit. 2) There's a new Tutorial for basic usage of QTR on the Mac. More description of the options and some curve examples. 3) Bug fixes for the 2200. 2880 dpi now works. In general its probably not worth the extra time but you may find it useful in some cases. The profiles are for 1440 however and to use them at 2880 they need a reduction in ink limits. In the print dialog Ink Limit -45% works well. Minimum page size was reduced to 2x4. 4) A couple obscure bug fixes in custom paper sizes -- mostly a metric issue. Roy On Wednesday, April 13, 2005, at 12:01 PM, Scott Graham wrote: - Roy Harrington roy@... Black & White Photo Gallery |
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Re: enhanced matte cool curve
I'm on a PC and have no idea how to install a curve on a Mac. The .quad
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file is the same on both platforms though, so if you can put it in the right location it should work for you. -- Daniel Staver Thank you for the quick response. I forgot to mention that I am on a |
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