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Author Topic: Best way to resize for a large print?  (Read 3602 times)

PBC

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Best way to resize for a large print?
« on: November 28, 2010, 03:37:20 pm »

Hi guys

I am about to send off an image to have my first large canvas produced and I was wondering what is the best way to get my image to the right size and sharpening to get optimum results.

My image produced from my D700 is 2748 x 3664.  What I need to do is resize it to 90 cm x 120 cm at 200 DPI   The print company say "We print 200dpi and with Dye Sublimation that equates to 3200 dpi output ink jet equivalent on the substrate." (if that makes sense).

I have Lightroom 3.2, Photoshop CS4 and Photokit Sharpener installed.

Am I better off doing this in Lightroom or opening into Photoshop and resize and sharpen there?   Appreciate the suggested steps (and what order) to maximise the quality of the canvas I will get back

Many thanks in advance

Phil
« Last Edit: November 28, 2010, 04:17:16 pm by Phil Corley »
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kwalsh

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Re: Best way to resize for a large print?
« Reply #1 on: November 28, 2010, 09:20:49 pm »

I'm sure you'll have much more knowledgeable advice come along with more details.  But it seems recently a lot of respected folks have been advocating that LR3's export resizing and sharpening settings for printing are of a high enough quality that many of the more exotic and involved workflows of the past are frequently not worth all the effort.

Ken
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Wayne Fox

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Re: Best way to resize for a large print?
« Reply #2 on: November 29, 2010, 12:31:00 am »

Hi guys

I am about to send off an image to have my first large canvas produced and I was wondering what is the best way to get my image to the right size and sharpening to get optimum results.

My image produced from my D700 is 2748 x 3664.  What I need to do is resize it to 90 cm x 120 cm at 200 DPI   The print company say "We print 200dpi and with Dye Sublimation that equates to 3200 dpi output ink jet equivalent on the substrate." (if that makes sense).

I have Lightroom 3.2, Photoshop CS4 and Photokit Sharpener installed.

Am I better off doing this in Lightroom or opening into Photoshop and resize and sharpen there?   Appreciate the suggested steps (and what order) to maximise the quality of the canvas I will get back

Many thanks in advance

Phil
Interesting ... why are they using a "dye sub" process?  While you can dye sub onto fabrics, I'm not aware of a process that can compete to direct inkjet printing onto canvas.  In my previous company we did a lot of dye sub to fabric work and while the results were OK, certainly not to the level of direct inkjet printing to canvas.

That being said, I would export from LR at the indicated resolution, probably using the option of sharpening for matt paper at a standard  amount.  Odd resolution request, since most doing dye sub to fabric use Mimaki printers (which uses Epson heads) and inks such as Sawgrass to print to a transfer sheet that is then "dye sublimated" to the fabric, so you'd think a 360 dpi file would be better.
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digitaldog

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Re: Best way to resize for a large print?
« Reply #3 on: November 29, 2010, 09:55:55 am »

I’d do the initial interpolation in ACR then apply the sharpening in PS using PKS. This should help:
http://www.digitalphotopro.com/technique/software-technique/the-art-of-the-up-res.html
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langier

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Re: Best way to resize for a large print?
« Reply #4 on: November 29, 2010, 11:18:44 am »

Why not ask your print supplier his advice on how to prep the file for output? I'm sure he's figured out the best workflow to get the best output quality.
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PBC

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Re: Best way to resize for a large print?
« Reply #5 on: November 29, 2010, 01:08:59 pm »

Thanks guys; in the end the print supplier is going to do all the resizing and sharpening for me.

Look forward to seeing what sort of job he makes of it  :-\

I did try printing to file from Lightroom and also Lightroom -> Photoshop; resized in PS and then sharpened using Photokit.  To me, there wasn't much difference, but I was looking on the monitor and not at printed output.

Phil

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Dick Roadnight

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Re: Best way to resize for a large print?
« Reply #6 on: November 29, 2010, 03:57:09 pm »

I’d do the initial interpolation in ACR then apply the sharpening in PS using PKS. This should help:
http://www.digitalphotopro.com/technique/software-technique/the-art-of-the-up-res.html
All the info always assumes you start with a **** Bayer-interpolated image from a camera with an Anti-aliasing filter... what if you start of with a MF MS image? do you use the same techniques or does it make a difference?

And what if you are using a BasiColor RIP? ...how much do you leave to the RIP?
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