Mike Chaney's Tech Corner
July 25, 2021, 05:16:26 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Feb 2013: Qimage Ultimate Challenges... have fun and explore features!
 
   Home   Help Search Login Register  

Professional Photo Printing for Windows
Print with
Qimage and see what you've been missing!
Pages: [1]
  Print  
Author Topic: Qimage Intermittently Applies sRGB Color Profile to Adobe RGB JPG Images  (Read 12608 times)
jasonb3
Newbie
*
Posts: 2


View Profile Email
« on: September 27, 2012, 06:26:54 PM »

Hi there,

I am new here but have been using Qimage for several years - and it's been wonderful for our workflow.

We have been experiencing an obscure issue where JPG images that have been saved as Adobe RGB in Photoshop CS6 are being printed as sRGB in Qimage. And the strange thing is that if it happens, it is only on 5x7 images.

I wish it was a consistent problem as it would be much easier to troubleshoot. I have tried hard converting the culprit images to Adobe RGB to make sure, but for these images, Qimage still reads them as having a sRGB profile. I even double checked the file info>advanced>adobe photoshop properties>photoshop ICC profile and it is ALWAYS AdobeRGB.

Is this something to do with the Photoshop JPG corruption issue from CS5?

Thanks in advance for your help!

Jason

Logged
Fred A
Forum Superhero
*****
Posts: 5427



View Profile WWW Email
« Reply #1 on: September 27, 2012, 08:10:17 PM »

Quote
We have been experiencing an obscure issue where JPG images that have been saved as Adobe RGB in Photoshop CS6 are being printed as sRGB in Qimage. And the strange thing is that if it happens, it is only on 5x7 images.

Hi Jason,
Let me ask an initial question.
You saved the image in Photo Shop presumably in Adobe 1998 color space.
When you open Qimage, you see the thumbnails of your saved images.
If you just hover the mouse pointer over one of these images, you will get a read on the hotbar, lower left of the screen of the color space...
It will say ICC followed by the color space that Qimage is using.
I would like to know what color space is indicated, and more important, whether that profile name has asterisks before and after the name.

Fred
Logged
Terry-M
The Honourable Metric Mann
Forum Superhero
*****
Posts: 3210



View Profile WWW
« Reply #2 on: September 27, 2012, 08:14:21 PM »

Hi Jason,
I must say Qimage does not usually do anything intermittently  Roll Eyes
Quote
Is this something to do with the Photoshop JPG corruption issue from CS5?
It may be but the problem was allowed for in Qimage Ultimate  (Studio is now retired) soon after the problem occurred in CS5.

The "correct" way for a colour management aware program to recognise an image colour space is by having the profile embedded.
Hovering the mouse over a thumb will show the profile Qimage is using in the Exif Hotbar below the thumbs.
I suggest you right click on a problem image thumb in Qimage and select Display "Image Info".
That will tell you what Qimage is reading. If it says "no embedded profile", then Qimage will use the default of sRGB.
If a profile is embedded it will say what it is unless the image header was corrupted by CS5.
If it's only your 7x5's, maybe you have something not set correctly in CS5 for embedding the profile and they are merely "tagged" by CS5.
I hope that is of some help, perhaps someone else can suggest other possible causes.
Terry
Logged
jasonb3
Newbie
*
Posts: 2


View Profile Email
« Reply #3 on: September 27, 2012, 09:35:19 PM »

Thanks for the replies.

I have a directory with two JPGs that I save the same way, both with the Adobe profile I presume from the RAW file (as that is what my camera is set to). I hover over both of the images, one shows AdobeRGB with asterisks around, and the other shows sRGB with asterisks around. I swear, I did the same thing to both files - bit of retouching, crop, flatten, save again at 12 quality for print.

When I check the adobe info, they both are showing AdobeRGB.

Jason
Logged
Terry-M
The Honourable Metric Mann
Forum Superhero
*****
Posts: 3210



View Profile WWW
« Reply #4 on: September 28, 2012, 07:24:19 AM »

Hi Jason,
Quote
I have a directory with two JPGs that I save the same way, both with the Adobe profile I presume from the RAW file (as that is what my camera is set to).
A raw file does not have a profile as such; the camera setting only applies to in-camera jpegs. An image is converted and the profile embedded when the raw is converted to jpeg or tiff.
What you say implies that CS5 was set differently when you saved as jpegs.
I suggest you revisit the raw images and carefully check the settings making sure CS5 embeds (not merely tags) the profile and it is set to Adobe RGB. I can't say how that is done in CS5, I don't own it.
Maybe the subject of this thread should be changed to: "CS5  Intermittently Applies sRGB Color Profile to Adobe RGB JPG Images"  Shocked
Terry
« Last Edit: September 28, 2012, 09:08:20 AM by Terry-M » Logged
Fred A
Forum Superhero
*****
Posts: 5427



View Profile WWW Email
« Reply #5 on: September 28, 2012, 09:19:30 AM »

Quote
I hover over both of the images, one shows AdobeRGB with asterisks around, and the other shows sRGB with asterisks around. I swear, I did the same thing to both files - bit of retouching, crop, flatten, save again at 12 quality for print.

First of all, you should understand that Terry and I asre saying the same thing, but sometimes, we approach from sifferent angles, and you might get a clue from either direction.

The fact that you show asterisks is a major clue.
It says, plainly that the color space profiles of RGB or ADOBE are *embedded* in the image and Qimage respects that and makes no change.
(It will allow you to change it if you wish, but those profiles are embedded by CS5 or CS6.)

So check your settings on PS ....

There are settings for working space, assign a profile, save as ... with a profile... and these are easy to mess up.

I have no idea how to advise you other than to do trial and error, but I'm sure there has to be someone around that knows PS well enough to specifically tell you what to set and where.

If nothing heard here by my noon (EDT), then I will make some phone calls and see if I can find out.

Fred

Logged
Terry-M
The Honourable Metric Mann
Forum Superhero
*****
Posts: 3210



View Profile WWW
« Reply #6 on: September 28, 2012, 10:17:22 AM »

Quote
I have no idea how to advise you other than to do trial and error, but I'm sure there has to be someone around that knows PS well enough to specifically tell you what to set and where.
I'm in the same boat.
From your screen shots it looks totally confusing compared to Qimage colour management where it's quite obvious what the colour space of an image is and the same applies when converting images - it's in your face and not hidden in multiple menus.  Angry
Terry
Logged
Fred A
Forum Superhero
*****
Posts: 5427



View Profile WWW Email
« Reply #7 on: September 28, 2012, 10:55:54 AM »

Quote
'm in the same boat.
From your screen shots it looks totally confusing compared to Qimage colour management where it's quite obvious what the colour space of an image is and the same applies when converting images - it's in your face and not hidden in multiple menus. 

I am playing around in S5 and trying to save a JPG in Adobe and/ or RGB.
I can do it by removing the checkmark from the USE this profile, Save as box.
I get an sRGB or aRGB embedded.....

But to add to the already overly confusing, and unnecessarily complicated mess, if I save the JPG using SAVE AS, the profile is embedded. If I use FILE SAVE, uncheck, I get  a JPG with no profile at all, and therefore Qimage tags it as sRGB.
So to make it a total can of maggots, If I Save as without a checkmark in Use this profile, I get an embedded RGB.
If I use FILE SAVE, without a checkmark, I get no profile embedded.

More...
If I change the color working space from Adobe to sRGB in PS5, I use Save AS, and uncheck USE THE PROFILE, I get a no profile embedded. with a check, I get RGB embedded.
BUT NOW, File SAVE is grayed out.

Can of worms does not adequately describe this convoluted mess.

Now you can see what a marvel of simple color management is if you use Qimage....

Fred
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!