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Hi, I am trying to get the RawTherapy plugin for importing Canon CR2 raw files into Gimp working but am struggling. I have installed RawTherapy successfully but when I try to open a CR2 file from Gimp I get the error:
There is no RAW loader installed to open 'Raw Canon' files.
GIMP currently supports these RAW loaders:
- darktable ( http://www.darktable.org/), at least 1.7
- RawTherapee ( http://rawtherapee.com/), at least 5.2
Please install one of them in order to load RAW files.
I am on Ubuntu 24.04.2
I believe I need to install RawTherapy into the "Plugins" folder but cannot locate it's path.
Can any help me with this?
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(05-10-2025, 03:47 AM)doiphoto Wrote: Hi, I am trying to get the RawTherapy plugin for importing Canon CR2 raw files into Gimp working but am struggling. I have installed RawTherapy successfully but when I try to open a CR2 file from Gimp I get the error:
There is no RAW loader installed to open 'Raw Canon' files.
GIMP currently supports these RAW loaders:
- darktable (http://www.darktable.org/), at least 1.7
- RawTherapee (http://rawtherapee.com/), at least 5.2
Please install one of them in order to load RAW files.
I am on Ubuntu 24.04.2
I believe I need to install RawTherapy into the "Plugins" folder but cannot locate it's path.
Can any help me with this?
First thing: No need to install any RawTherapee "anything" into the plug-ins folder. The support is already in the Gimp system files.
..then..
What type of Gimp 3.0 and Rawtherpee (RT) have you installed. Unfortunately 'buntu tends to install a SNAP version or you might have installed a Flatpak or even an appimage. These are "sandboxed" and prevent the plugin working.
Since you are using 'buntu 24.04 you can install a regular version for each from an ubuntu PPA
https://launchpad.net/~ubuntuhandbook1/+...ntu/gimp-3
and
https://launchpad.net/~ubuntuhandbook1/+...awtherapee
How to add these PPA's to the repos is on the page.
An example using a lumix .rw2 file. Open in Gimp which sends it to RT . Close RT (wait-a-bit) and it opens in Gimp. 40 second demo: https://i.imgur.com/2ZFcUAn.mp4
Other things to consider, Cut out the Gimp bit. Open in RT and export as a 32 bit tiff - open that in Gimp.
Canon CR2 files ? I have seen reports about problems with the latest version.
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05-10-2025, 12:11 PM
(This post was last modified: 05-10-2025, 12:32 PM by doiphoto.)
(05-10-2025, 08:14 AM)rich2005 Wrote: (05-10-2025, 03:47 AM)doiphoto Wrote: Hi, I am trying to get the RawTherapy plugin for importing Canon CR2 raw files into Gimp working but am struggling. I have installed RawTherapy successfully but when I try to open a CR2 file from Gimp I get the error:
There is no RAW loader installed to open 'Raw Canon' files.
GIMP currently supports these RAW loaders:
- darktable (http://www.darktable.org/), at least 1.7
- RawTherapee (http://rawtherapee.com/), at least 5.2
Please install one of them in order to load RAW files.
I am on Ubuntu 24.04.2
I believe I need to install RawTherapy into the "Plugins" folder but cannot locate it's path.
Can any help me with this?
First thing: No need to install any RawTherapee "anything" into the plug-ins folder. The support is already in the Gimp system files.
..then..
What type of Gimp 3.0 and Rawtherpee (RT) have you installed. Unfortunately 'buntu tends to install a SNAP version or you might have installed a Flatpak or even an appimage. These are "sandboxed" and prevent the plugin working.
Since you are using 'buntu 24.04 you can install a regular version for each from an ubuntu PPA
https://launchpad.net/~ubuntuhandbook1/+...ntu/gimp-3
and
https://launchpad.net/~ubuntuhandbook1/+...awtherapee
How to add these PPA's to the repos is on the page.
An example using a lumix .rw2 file. Open in Gimp which sends it to RT . Close RT (wait-a-bit) and it opens in Gimp. 40 second demo: https://i.imgur.com/2ZFcUAn.mp4
Other things to consider, Cut out the Gimp bit. Open in RT and export as a 32 bit tiff - open that in Gimp.
Canon CR2 files ? I have seen reports about problems with the latest version.
That is starting to make some sense because I have had it wrking previously. I will uninstall Gimp/RT and use the launchpad versions and post how it goes. Thanks!
(05-10-2025, 12:11 PM)doiphoto Wrote: (05-10-2025, 08:14 AM)rich2005 Wrote: (05-10-2025, 03:47 AM)doiphoto Wrote: Hi, I am trying to get the RawTherapy plugin for importing Canon CR2 raw files into Gimp working but am struggling. I have installed RawTherapy successfully but when I try to open a CR2 file from Gimp I get the error:
There is no RAW loader installed to open 'Raw Canon' files.
GIMP currently supports these RAW loaders:
- darktable (http://www.darktable.org/), at least 1.7
- RawTherapee (http://rawtherapee.com/), at least 5.2
Please install one of them in order to load RAW files.
I am on Ubuntu 24.04.2
I believe I need to install RawTherapy into the "Plugins" folder but cannot locate it's path.
Can any help me with this?
First thing: No need to install any RawTherapee "anything" into the plug-ins folder. The support is already in the Gimp system files.
..then..
What type of Gimp 3.0 and Rawtherpee (RT) have you installed. Unfortunately 'buntu tends to install a SNAP version or you might have installed a Flatpak or even an appimage. These are "sandboxed" and prevent the plugin working.
Since you are using 'buntu 24.04 you can install a regular version for each from an ubuntu PPA
https://launchpad.net/~ubuntuhandbook1/+...ntu/gimp-3
and
https://launchpad.net/~ubuntuhandbook1/+...awtherapee
How to add these PPA's to the repos is on the page.
An example using a lumix .rw2 file. Open in Gimp which sends it to RT . Close RT (wait-a-bit) and it opens in Gimp. 40 second demo: https://i.imgur.com/2ZFcUAn.mp4
Other things to consider, Cut out the Gimp bit. Open in RT and export as a 32 bit tiff - open that in Gimp.
Canon CR2 files ? I have seen reports about problems with the latest version.
That is starting to make some sense because I have had it wrking previously. I will uninstall Gimp/RT and use the launchpad versions and post how it goes. Thanks!
Hi sorry to sound like a dummy. I have added those two repositories now but where do I actually download the programs? I am not experienced with launchpad.
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If anyone else comes across this issue, I have found so much conflicting information on this, I have decided to simply open the CR2 files in RawTherapy, save as Tiffs and then open them in in Gimp.
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05-13-2025, 06:59 AM
(This post was last modified: 05-13-2025, 07:07 AM by rich2005.)
Quote:If anyone else comes across this issue, I have found so much conflicting information on this, I have decided to simply open the CR2 files in RawTherapy, save as Tiffs and then open them in in Gimp.[/color]
That is probably the best way, no a lot of time/workflow saved using the Gimp plugin.
---in case any other ubuntu user has the same problem ---
The instructions are on the PPA pages, after adding the PPA to to the repo list
In a terminal
sudo add-apt-repository ppa:ubuntuhandbook1/gimp-3
sudo apt update
but then up to the user to install:
sudo apt install gimp
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(05-12-2025, 11:53 PM)doiphoto Wrote: If anyone else comes across this issue, I have found so much conflicting information on this, I have decided to simply open the CR2 files in RawTherapy, save as Tiffs and then open them in in Gimp.
This is also what I do. The tools in the demosaicing app are better suited for photography and I do most of the editing/grading in the app. Gimp is OK for for local edits.
As I use Darktable I can also directly export to Gimp 32-bit FP format.
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(05-10-2025, 08:14 AM)rich2005 Wrote: (05-10-2025, 03:47 AM)doiphoto Wrote: Hi, I am trying to get the RawTherapy plugin for importing Canon CR2 raw files into Gimp working but am struggling. I have installed RawTherapy successfully but when I try to open a CR2 file from Gimp I get the error:
There is no RAW loader installed to open 'Raw Canon' files.
GIMP currently supports these RAW loaders:
- darktable (http://www.darktable.org/), at least 1.7
- RawTherapee (http://rawtherapee.com/), at least 5.2
Please install one of them in order to load RAW files.
I am on Ubuntu 24.04.2
I believe I need to install RawTherapy into the "Plugins" folder but cannot locate it's path.
Can any help me with this?
First thing: No need to install any RawTherapee "anything" into the plug-ins folder. The support is already in the Gimp system files.
..then..
What type of Gimp 3.0 and Rawtherpee (RT) have you installed. Unfortunately 'buntu tends to install a SNAP version or you might have installed a Flatpak or even an appimage. These are "sandboxed" and prevent the plugin working.
Since you are using 'buntu 24.04 you can install a regular version for each from an ubuntu PPA
https://launchpad.net/~ubuntuhandbook1/+...ntu/gimp-3
and
https://launchpad.net/~ubuntuhandbook1/+...awtherapee
How to add these PPA's to the repos is on the page.
An example using a lumix .rw2 file. Open in Gimp which sends it to RT . Close RT (wait-a-bit) and it opens in Gimp. 40 second demo: https://i.imgur.com/2ZFcUAn.mp4
Other things to consider, Cut out the Gimp bit. Open in RT and export as a 32 bit tiff - open that in Gimp.
Canon CR2 files ? I have seen reports about problems with the latest version.
Sounds very plausible, thanks for the clarification.. I had exactly the same problem with the Snap version of GIMP, plugin communication was completely blocked. Since I installed both via the PPA, everything's been working flawlessly. I would recommend it to anyone who works with RAW files..
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