Process Recipe - newbie question
Can anyone help please? I am not sure about is this: my camera can produce a large, fine jpeg file of 8256 pixels (long edge) by 6192 pixels (short edge). My user manual suggest at these dimensions, I can print as large as 27.5 inches by 20.6 inches, if I print at 300 ‘DOTS’ per inch. However, if I wanted to print a large poster larger than that e.g. 48 inches by 36 inches, at a printed resolution of 300 ‘DOTS’ per inch, does that mean I still enter 300 ‘PIXELS’ per inch against ‘Resolution’ in the process recipe? If so, then trying to fix my maximum available 8256 pixels into those 48 inches, would I guess mean I have to reduce my Resolution entry in the process recipe, from 300 ‘PIXELS’ per inch down to 172 ‘PIXELS’ per inch, as the maths show 8256 divided by 48 equals 172 i.e. 172 pixels fitted into each inch of the 48 inches. If I were to keep my Resolution entry to 300 ‘PIXELS’ per inch, they clearly won’t fit into the 48 inches, so does Capture One Pro algorithms ‘interpolate’ the image data to fill in the pixel gaps, the best it can based on the surrounding pixels? Any idea or does anyone know the answer to these?
0
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If you are printing the printer will do its own thing with whatever you throw at it.
C1 can scale up to 250% (in one step).
The Resolution setting is simply there to allow you to see, in the Process Recipe screen, how large the image could be if using the the current image crop (if any) and the Scale settings you have chosen.
Try setting the Scale to Fixed and 250% leaving the Resolution at 300 ppi. The boxes at the top and side of the screen should change to show you the max size that would be available at the resolution chosen. You can change the resolution to change the size.
To be realistic you could probably drop quite some way from 300ppi without seriously affecting print resolution quality as printed and viewed. Bear in mind that, typically, a poster size print needs to be viewed from a greater distance to take in the image so working to the finest resolution may not be very important.
HTH.
Grant0 -
Thank you for that. I’m still a little confused. Are you saying the scenario I described is correct in that to print a poster measuring 48 inches by 36 inches, I will need to set a ‘Resolution’ in the recipe settings of 172 px/inch, to get the available pixels I have in the image to stretch to that print size? This assumes I would not ask C1 to upsize my image by interpolating pixels in order to say save the file with a resolution of 300 pixels/inch? Is that right?
Basically if I wanted to print a poster that size, I’m asking you exactly what settings I need to enter into the process recipe in order to get the best possible printed output. I understand that any upsizing would result in degrading the printed output quality a little. I guess dropping my Resolution to 172 px/inch would give me a higher printed resolution (no upsizing) than if I upsized using C1 interpolation.
Andrew0 -
NN635956715616700552UL wrote:
Thank you for that. I’m still a little confused. Are you saying the scenario I described is correct in that to print a poster measuring 48 inches by 36 inches, I will need to set a ‘Resolution’ in the recipe settings of 172 px/inch, to get the available pixels I have in the image to stretch to that print size? This assumes I would not ask C1 to upsize my image by interpolating pixels in order to say save the file with a resolution of 300 pixels/inch? Is that right?
Basically if I wanted to print a poster that size, I’m asking you exactly what settings I need to enter into the process recipe in order to get the best possible printed output. I understand that any upsizing would result in degrading the printed output quality a little. I guess dropping my Resolution to 172 px/inch would give me a higher printed resolution (no upsizing) than if I upsized using C1 interpolation.
Andrew
Andrew,
The printer will sort out how to handle the file you send to it and what to do to make the print measurements that size you specify.
Printers, working with their own interpretations of the file depending in their technology, will come up with a way of deciding how to make their print droplet sizes work with whatever data they interpret.
The resolution depends only on the pixel dimensions of the file supplied and the size you wish to print at.
So if you have a 6000 pixel wide processed image and your printer has a native resolution of, say, 300 pixel equivalent (they will typically work with DPI internally which is not necessarily the same as PPI), at the native resolution (300ppi) the printer will deliver a 20in side. If you want 40 inches the printer will drop the PPI to 150.
If you choose to print the 6000px wide file at 5inches the printer will either increase the PPI if it has any headroom in its ink dot size to do so or, more likely, will simply re-interpret the data and throw a lot of it away before squrting ink at the paper.
Does this matter?
Well, it may depend on the content and the purpose of the print to some extent but in general if you are printing for regular viewing the size you print to will be somewhat influenced by the expected viewing distance and then the ability of the viewer's eyes to see the details that might, perhaps, be marginally compromised by doubly the dimensions, when they are viewing from further away.
If you go pixel peeping the story may be different but probably by very little.
Being able to 'set' the PPI value changes nothing in the file you create but DOES allow C1 to advise about hope big the print can be at that size when printed at the PPI currently set for the Process Recipe.
Alternatively if you are sending the file to a print service that expects to base its print size on a PPI value and specific dimensions then C1 can use the set dimensions and the request PPI to resize the output file (up to 250% in one pass).
In that case if you are using the crop tool and viewing the file in the crop tool the tool will show you the current maximum size that can be printed according to the settings. If enlargement is required to achieve the size you wish C1 will in some cases automatically apply the "enlargement" in order to be able to report the maximum size possible. As per the 400ppi example in the video linked below.
See the tutorial video here for information about how that works.
https://learn.captureone.com/tutorials/ ... rint-co11/
HTH.
Grant0 -
Dear Grant, Thank you so very much indeed for your kind and comprehensive reply, which is very helpful. I am most grateful for your time.
Kind regards
Andrew0
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