Print sharpening question.

sectionq

Full Member

Posts: 109

Print sharpening question.

« on: February 29, 2012, 09:39:53 PM »

Hi guys,

me again. I've got the sharpening down on Q these days as I really only use one paper but my maximum sizes that I print are 20x40" onto canvas. What I want to know is how the print sharpening in Q scales up, is it based on the input resolution before interpolation or on the size of the final print. The reason I ask is that I need to prepare some files to send off for larger prints than I can handle with my printer. It seems that if I get the sharpening right for a 10" print then the sharpening will also be right for a 20" print but as those sizes aren't significantly different then maybe I wouldn't be able to really judge if the sharpening is different. The prints that I need to prepare will end up being close to 8x4' so will the halos scale up to work with the larger size? I'm going to need to get some small proofs done as it's a slightly different machine but I'm hoping to get a good starting point using my normal settings.

Any ideas if it'll be as simple as I hope?

Thanks in advance.

Jamie


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Terry-M

The Honourable Metric Mann
Forum Superhero

Posts: 3251

Re: Print sharpening question.

« Reply #1 on: March 01, 2012, 05:40:02 PM »

Hi Jamie,

Quote

What I want to know is how the print sharpening in Q scales up

All you really need to know is that it is "smart" and once a level has been set in the options, it should work for all sizes of prints.
However, more detail can be read if you open the Edit - Preferences - Printing options. Click the Help button to see the details.
In simple terms what your do is sharpen your images so they look right to your taste on screen and then set the Smart Print Sharpening level so a print matches the screen level of sharpness. Start with the default of level of 5, make some test prints with different levels to get the one that matches the screen image. I think most users find the default level of 5 is fine.
You can set the level in the preferences or in Job Properties on the main screen, see screen shots attached.
You can read the on-line manual about this here http://www.ddisoftware.com/qimage-u/help/function.htm#printinterp.

Quote

so will the halos scale up to work with the larger size?

If you can see halos on screen it sounds like the image is over-sharpened! Shocked

Terry


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sectionq

Full Member

Posts: 109

Re: Print sharpening question.

« Reply #2 on: March 01, 2012, 09:28:33 PM »

Thanks Terry, so it sounds like it scales up, that's good. Smart in fact! Don't worry, no halos on screen, was just referring to the sharpening process itself. 5 for jpgs with bad in camera sharpening and 7 for files I've sharpened myself works a treat.

Thanks again.

Jamie


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