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Breaking News Updates, innovations, equipment: moderated!

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  #1  
Old May 5th, 2007, 10:47 PM
Asher Kelman Asher Kelman is offline
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Default Free Print Targets For Photography! What do you use?

Not often do "experts" give things away. One of the things we treasure is the sincere colleagial approach we have nurtured here. We have no gurus, just exchange. It's that simple.

So when we see a guesture of kindness to other photographers, I'd like to say thanks!

Uwe Steinmueller has gotten together with input from Jack Flesher and brought the LAB output printing target of Bill Atkinson to the common world of our RGB set up (albeit CMYK) printers from Epson, Canon, HP and more. Printers do not necessarily behave with each paper batch and ink set exactly as expected.

Viewing conditions and staring at the screen can alter perception. Photometry is important but perception needs a real print! There's a whole train of remapping and assumptions that are at work in choosing inks to build a paticular dot on your print. That's the world of mathematics. Still the result has to work with our eyes and brains.

It's valuable, therefore, to have a standard reference file to be able to check the images have no failure in rendering.



This file offers a number of unique advantages as explained by Uwe:

Quote:
Originally Posted by Uwe Steinmueller
  • Can be printed as is on Letter sized paper
  • ProPhoto RGB and not LAB mode (some new printer plugins cannot print from LAB)
  • 16 bit
  • Some new elements (printer black/highlight test ramp by Uwe Steinmueller)
  • New B&W test image by Jack Flesher
  • Large black patch to easily measure the dmax
  • Pure white close to the border to check the influence of Gloss Enhancers
The great thing is that the file is available for download free of charge!

Thanks guys!

Last edited by Asher Kelman; August 15th, 2012 at 12:50 PM.
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  #2  
Old May 6th, 2007, 03:11 AM
Steve Saunders Steve Saunders is offline
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Well done and thanks Uwe!
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  #3  
Old May 6th, 2007, 06:15 AM
Cem_Usakligil Cem_Usakligil is offline
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Thumbs up Thanks!

Definitely! Well done and thanks a lot Uwe :-))

Cheers,
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  #4  
Old May 6th, 2007, 10:27 AM
Uwe Steinmueller Uwe Steinmueller is offline
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We call it now Printer Test Image and not target to avoid confusion with profiling targets.

Also a lot of credit is due for Jack Flesher and of course Bill Atkinson.

Uwe
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  #5  
Old May 6th, 2007, 11:58 AM
Georg R. Baumann Georg R. Baumann is offline
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Very kewl!

Kudos to Bill, Jack and last not least Uwe! I look forward to reading Jack's explanations!
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  #6  
Old May 6th, 2007, 04:53 PM
Bart_van_der_Wolf Bart_van_der_Wolf is offline
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Quote:
Originally Posted by Uwe Steinmueller View Post
We call it now Printer Test Image and not target to avoid confusion with profiling targets.

Also a lot of credit is due for Jack Flesher and of course Bill Atkinson.
With sincerely due credit to all involved, why a 'Letter sized' lay-out?

Bart
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  #7  
Old May 6th, 2007, 07:37 PM
Uwe Steinmueller Uwe Steinmueller is offline
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>why a 'Letter sized' lay-out?

To be able to print on smaller sized sheets.

I most of the time print on 9.5x13 (13x19 cut in half).

On the Z3100 need now 4x 9.5x13 to make:

- 1x Printer calibration
- 2x Printer targets for EyeOne Photo
- 1 Printer Evaluation Image

But also only Letter sized sheets would work. I hope it would also work on A4 though.

Uwe

Uwe
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  #8  
Old May 6th, 2007, 07:48 PM
Diane Fields Diane Fields is offline
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Thanks so much to all.

Diane
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  #9  
Old May 6th, 2007, 08:05 PM
Will_Perlis Will_Perlis is offline
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An excellent tool! Thank you. (And I know I'm going to appreciate that razor blade in the upper left when nothing goes right)
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  #10  
Old May 6th, 2007, 08:13 PM
Uwe Steinmueller Uwe Steinmueller is offline
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Jack Flesher will write about the use of the test image.

But it is amazing what only the strawberries can reveal. If you just want to grab them to eat then the print and profile are likely quite good. If the strawberries don't look quite ripe (too light and lacking definition) you may have a printer, paper or profile issue. Start with the profile.

Uwe
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  #11  
Old May 7th, 2007, 03:02 AM
Georg R. Baumann Georg R. Baumann is offline
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I am disappointed, the epson paper has a somewhat stale taste. <grins>
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  #12  
Old August 15th, 2012, 12:30 PM
Asher Kelman Asher Kelman is offline
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Let's see an update on use of test images!



What do you use?

A comprehensive resource for free downloadable test images, (for all stages in accurate image photography making), is found here in Northlight Images, a UK based website. There are numerous goal specific test images:
  • B&W
  • Non linearity
  • Monitor setup
  • Skin tone
  • Hair detail
  • Dark hair without blocking
  • AF lens testing accuracy and calibration -references our own Bart Van Der Wolf's moiré methodology
  • Deep shadow detail and so much more
Or you just print?

Asher
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  #13  
Old August 15th, 2012, 04:11 PM
Jerome Marot Jerome Marot is offline
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To check calibration, I print an electronic version of the Xrite color checker and compare it to the original.
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  #14  
Old August 15th, 2012, 04:22 PM
Asher Kelman Asher Kelman is offline
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Quote:
Originally Posted by Jerome Marot View Post
To check calibration, I print an electronic version of the Xrite color checker and compare it to the original.
So you have a well-calibrated monitor for the original! Do you also have the print version?

Asher
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  #15  
Old August 16th, 2012, 12:12 AM
Jerome Marot Jerome Marot is offline
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By "original", I meant the print version. Comparing prints to anything else than prints is a problem. So I compare the output of my printer to the professionally produced print from Xrite. If they match under a variety of lights, including daylight outside, I consider my system well calibrated.

It is a very simple test and one with few possibilities for errors and I am always surprised that so few people use it.
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