Mike Chaney's Tech Corner
April 19, 2024, 04:08:23 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Qimage registration expired? New lifetime licenses are only $59.99!
 
   Home   Help Search Login Register  

Professional Photo Printing Software for Windows
Print with
Qimage and see what you've been missing!
Pages: [1]
  Print  
Author Topic: Qimage shows "Image Read Error" on Large Tiff  (Read 5235 times)
mflum7
Newbie
*
Posts: 3


View Profile
« on: May 29, 2017, 03:00:21 AM »

When loading a Large Tiff "23x34 @ 600 PPI 13854 x 20753, ITPC, ICC: sRGB.icm" i get a IMAGE READ ERROR. Yet the image loads fine in Photoshop CC 2017.

Photo is too large to attach 473,383,740.


Please let me know of a place to upload the file.


Michael
Logged
Fred A
Forum Superhero
*****
Posts: 5644



View Profile WWW Email
« Reply #1 on: May 29, 2017, 11:17:49 AM »

Quote
Please let me know of a place to upload the file.

Michael,
I use (free) www.wetransfer.com
Send it to wathree.ssz@verizon.net. I'll see that Mike gets it.

Fred
Logged
admin
Administrator
Forum Superhero
*****
Posts: 4120



View Profile Email
« Reply #2 on: May 29, 2017, 12:51:38 PM »

At 8 bits/channel with no alpha channels, that's an 862MB image.  That in itself is fine but is the image 16 bit and/or does it have alpha channels?  1GB is about the limit for image size in QU.

Regards,
Mike
Logged
Ernst Dinkla
Sr. Member
****
Posts: 410


View Profile Email
« Reply #3 on: May 30, 2017, 08:59:16 AM »

When loading a Large Tiff "23x34 @ 600 PPI 13854 x 20753, ITPC, ICC: sRGB.icm" i get a IMAGE READ ERROR. Yet the image loads fine in Photoshop CC 2017.

Photo is too large to attach 473,383,740.


Please let me know of a place to upload the file.


Michael

Sometimes when a Tiff has some Illustrator/Indesign origins or is converted on color space there can be a flag in it that still says CMYK. Saving it again from Photoshop can help. A conversion to JPEG at highest level (no loss) save and back to Tiff and save can help. Or use another program like Photoline to save the Tiff from. It is not always just the size or alpha channels in my experience.

Met vriendelijke groet, Ernst

http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots
Logged
Fred A
Forum Superhero
*****
Posts: 5644



View Profile WWW Email
« Reply #4 on: June 02, 2017, 07:22:12 PM »

Quote
When loading a Large Tiff "23x34 @ 600 PPI 13854 x 20753, ITPC, ICC: sRGB.icm" i get a IMAGE READ ERROR

In reality, the image size was 26044 x 21152 x 3 = 1.6 gigabytes; too large for Qimage which will handle a little over 1 gigabyte.
Simply reduce the unnecessary 600 ppi to 300 ppi and it works.


Fred
Logged
mflum7
Newbie
*
Posts: 3


View Profile
« Reply #5 on: June 03, 2017, 06:46:46 PM »

Thanks. You are correct the pixel sizes were incorrect ( i know better than to multi-task)
History: The original image is 6x6 on 120 film. It was scanned on an Epson Perfection 4990.
It loads into Photoshop correctly but not Lightroom (a bug report was submitted and they told me they would fix it for the next release)
I was able to print it using some expensive RIP software, but being a small business I wanted to reduce costs.
The "23 x 34" is my minimum size. Using the 600 ppi was to prevent pixelation on the larger sizes,
so reduction to 300 ppi was not an option I was looking for.
Logged
admin
Administrator
Forum Superhero
*****
Posts: 4120



View Profile Email
« Reply #6 on: June 04, 2017, 04:29:09 AM »

Thanks. You are correct the pixel sizes were incorrect ( i know better than to multi-task)
History: The original image is 6x6 on 120 film. It was scanned on an Epson Perfection 4990.
It loads into Photoshop correctly but not Lightroom (a bug report was submitted and they told me they would fix it for the next release)
I was able to print it using some expensive RIP software, but being a small business I wanted to reduce costs.
The "23 x 34" is my minimum size. Using the 600 ppi was to prevent pixelation on the larger sizes,
so reduction to 300 ppi was not an option I was looking for.

Fred passed along the image and the image itself doesn't contain anywhere near enough information to warrant the resolution being used.  It starts to break down at about 25% zoom and at 50% (1/4 the file size), it's just blurry and grainy.  Meaning... you could easily cut that file down to 1/4 the size (about 13000 x 10500) and not see any difference at all in the final print.

If you reduced to that resolution and printed at the same size in QU, the QU print will be as good or better than the RIP you used.

Mike
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
Security updates 2022 by ddisoftware, Inc.