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Author Topic: Lr lighter prints  (Read 1373 times)

adias

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Re: Lr lighter prints
« Reply #20 on: December 16, 2018, 06:50:39 pm »

Adding Brightness values to the Print module is a band-aid, and yes, adding +10 is an indication that the system pipeline is way off.

I repeat, in my case, nothing changed other than the OS (Mojave) and Lr8.x. Same MBP Retina display and LG 5k. And if anything, my observation is the opposite of the typical reports - people complain their prints are dark; in my case they are slightly lighter. I suspect that some brightness level changed in OS X Mojave and/or Lr 8.x. But as i said, it is a tiny change, so I can correct by increasing very slightly my screen brightness.

Lr Print module +10 brightness correction as used by a LuLa Master... Ouch!

Thanks for the comments!

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digitaldog

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Re: Lr lighter prints
« Reply #21 on: December 16, 2018, 06:59:18 pm »

Ouch indeed.
What I haven't seen is what printer you're using. There certainly is a bug under the 3880 printer driver with Mojave but not as you describe.
Really the best approach is to forget the display for the time being and find out if the two versions actually produce different results by printing ideally color patches and measuring them, producing a deltaE report. Not everyone has such tools so the next best approach is to use a printer reference file like this: http://www.digitaldog.net/files/2014PrinterTestFileFlat.tif.zip
Of course, it's possible the display calibration needs a new adjustment for whatever reason. Far, far better to adjust the backlight intensity the futz with the LR Print adjustment sliders.
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Andrew Rodney
Author “Color Management for Photographers"

adias

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Re: Lr lighter prints
« Reply #22 on: December 16, 2018, 07:18:35 pm »

I print on an Epson 7890. Which driver issues do you know in the 3880?
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digitaldog

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Re: Lr lighter prints
« Reply #23 on: December 16, 2018, 07:22:16 pm »

I print on an Epson 7890. Which driver issues do you know in the 3880?
If the 16 bit check box is on, output is way off wrong.
Edit: the details:
https://forum.luminous-landscape.com/index.php?topic=126897.msg1073567#msg1073567
« Last Edit: December 16, 2018, 07:30:43 pm by digitaldog »
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Andrew Rodney
Author “Color Management for Photographers"

Wayne Fox

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Re: Lr lighter prints
« Reply #24 on: December 17, 2018, 08:19:22 pm »

Wayne, when you re-installed the Epson driver, was it to a more recent version? I ask to see whether the problem could have been simply the driver not being in sync with the latest OSX version. If it's not that, it's disturbing, as it raises once again the issue of colour management inconsistency with OSX upgrading that has happened in the past. And if so, one wonders what greater amount of quality control and coordination with application developers and printer manufacturers would improve reliability. The way it is supposed to work is that OSX SDKs go to developers and manufacturers a good while before release so that all may do the needful to render their products fully consistent. Again one wonders to what extent this happens effectively enough.
I had already installed the driver updates shortly after Mojave was released but didn’t install Mojave until the 10.14.1 update.

As far as quality control, this doesn’t seem to be a very common problem, so the uniqueness would imply something in my system setup.  Not sure how any company can be expected to catch such anomalies.
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digitaldog

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Re: Lr lighter prints
« Reply #25 on: December 17, 2018, 08:26:40 pm »


Always useful to take note of the "Epson Enema" to use prior to reinstalling a version of the driver.


Delete all instances of Epson printers from System Preferences>Print & Fax.
   •   Then go to /Library/Printers and toss the whole Epson folder.
   •   Toss LFP Remote Panel (IF you are using this utility for your printer).
   •   Then reinstall drivers from Epson and never Apple.


When you go back to Print & Fax to add the printer, on 10.X I had to wait almost a minute before the IP version of the printer showed up, whereas the Bonjour one shows up right away. Then add the IP instance of the printer. This is for printers on a network.
 
Then re-install LFP Remote Panel if you use it with this printer.
 
NOTE: IF you have more than one Epson printer, you need to install the driver in the order of their release! Older then newer or you run into issues (eg, install 4800 before you’d install 3880).
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Andrew Rodney
Author “Color Management for Photographers"

Mark D Segal

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Re: Lr lighter prints
« Reply #26 on: December 17, 2018, 08:37:04 pm »



As far as quality control, this doesn’t seem to be a very common problem, so the uniqueness would imply something in my system setup.  Not sure how any company can be expected to catch such anomalies.

I agree - there's a limit beyond which they need to rely on user experience for experiencing and reporting unique, arcane issues.
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Mark D Segal (formerly MarkDS)
Author: "Scanning Workflows with SilverFast 8....."
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