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Author Topic: printing from tiff or jpeg?  (Read 1044 times)

bwana

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printing from tiff or jpeg?
« on: February 03, 2019, 12:30:14 pm »

I understand that post processing benefits from maximizing the information of the image prior to any manipulation (for example, using a large color space prior to doing color manipulations, using the most pixels prior to sharpening, etc). But what about printing?

I I have 500 meg tiff image, are there specific conditions that benefit when printing from this tiff rather than a jpeg?

For example, I am printing at 360 ppi. I would like my image to have this pixel density prior to printing to avoid scaling artifacts. So if the image, for example is 7200 x 3600 pixels it would print at 20 x 10 inches. Would jpeg compression artifacts be seen in the print?

Of course someone might say ' why bother to compress to jpeg if you already have the tiff'. Usually I wouldnt compress but I have some large panoramas (20 or so images) where the resulting panorama exceeds my available ram.
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mearussi

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Re: printing from tiff or jpeg?
« Reply #1 on: February 03, 2019, 01:40:58 pm »

As long as no more manipulation of the image is required, there is no noticeable difference in printing from a jpeg saved at the highest setting vs a tiff.
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digitaldog

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Re: printing from tiff or jpeg?
« Reply #2 on: February 03, 2019, 02:43:10 pm »

As long as no more manipulation of the image is required, there is no noticeable difference in printing from a jpeg saved at the highest setting vs a tiff.
+1, certainly if the quality setting isn't too low. Interesting piece on settings at least via LR here:
http://regex.info/blog/lightroom-goodies/jpeg-quality/full-res-examples
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BobShaw

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Re: printing from tiff or jpeg?
« Reply #3 on: February 03, 2019, 07:20:51 pm »

As long as no more manipulation of the image is required ..
How do you know?
You may not want do any manipulation, but does the printer, driver or software? What if the margin is wrong or a colour is out of gamut? Does it need to move or change pixels?
I don't know. But in practical terms if you are making a JPG to print 20x10 will you be making another one to print a different size? Will you be keeping the TIF anyway?

I just find it is much easier to export a 16bit TIFF of the maximum size from the catalogue and every time I print I use the same file using a printing programme and let it work it out.

If it is actually running out ram then there is not much you may be able to do but the operating system should have a way around that. There may be another problem.
« Last Edit: February 03, 2019, 07:38:19 pm by BobShaw »
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bwana

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Re: printing from tiff or jpeg?
« Reply #4 on: February 03, 2019, 10:05:31 pm »

thank you.
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mearussi

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Re: printing from tiff or jpeg?
« Reply #5 on: February 03, 2019, 11:45:10 pm »

How do you know?
You may not want do any manipulation, but does the printer, driver or software? What if the margin is wrong or a colour is out of gamut? Does it need to move or change pixels?
I don't know. But in practical terms if you are making a JPG to print 20x10 will you be making another one to print a different size? Will you be keeping the TIF anyway?

I just find it is much easier to export a 16bit TIFF of the maximum size from the catalogue and every time I print I use the same file using a printing programme and let it work it out.

If it is actually running out ram then there is not much you may be able to do but the operating system should have a way around that. There may be another problem.
Your choice, but there's still no visible difference. And your method will work fine for smaller files but try printing a 500mb pano stitch using tiff and you're in for a long download time.
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BobShaw

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Re: printing from tiff or jpeg?
« Reply #6 on: February 04, 2019, 08:11:31 am »

Your choice, but there's still no visible difference. And your method will work fine for smaller files but try printing a 500mb pano stitch using tiff and you're in for a long download time.
500MP should not be a problem unless something else is going on. I have 500MB files but they are 15000 pixels wide.
I am running on a 2013 iMac with 24GB Rm. Many people have a lot more.
Are you printing over a network?
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Alan Klein

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Re: printing from tiff or jpeg?
« Reply #7 on: February 04, 2019, 09:55:15 am »

Curious.  Since LR doesn;t save the edit as a separate image file, what does it do to the resultant post-processed image during its print process?  There's neither a jpeg or tiff or anything else for that matter.

digitaldog

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Re: printing from tiff or jpeg?
« Reply #8 on: February 04, 2019, 10:27:04 am »

Curious.  Since LR doesn;t save the edit as a separate image file, what does it do to the resultant post-processed image during its print process?  There's neither a jpeg or tiff or anything else for that matter.
LR will output a JPEG with the edits. LR does save edits to an actual file as well (a DNG, TIFF or JPEG) as metadata if so set but you do need to burn the edits into a rendered image and that's of course possible.
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Alan Goldhammer

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Re: printing from tiff or jpeg?
« Reply #9 on: February 04, 2019, 10:43:36 am »

LR will output a JPEG with the edits. LR does save edits to an actual file as well (a DNG, TIFF or JPEG) as metadata if so set but you do need to burn the edits into a rendered image and that's of course possible.
Correct.  I've cleaned up a lot of cell phone pictures with LR and then printed them out or sent the final JPGs to the family member who took the image.
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Alan Klein

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Re: printing from tiff or jpeg?
« Reply #10 on: February 04, 2019, 10:53:17 am »

What is the differences from printing from a rendered edited image and printing from the LR metadata?  How does LR handle these things differently?

digitaldog

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Re: printing from tiff or jpeg?
« Reply #11 on: February 04, 2019, 01:10:46 pm »

What is the differences from printing from a rendered edited image and printing from the LR metadata?  How does LR handle these things differently?
On the print, no difference.
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