14

You can only preview noise reduction in RT when you zoom image to 100%, even in latest version. Many other tools have same limitations for previewing, they are marked with small "1:1" label near their names.


8

From the RAWTheraPee 3.0 Documentation: PP3 files If you have saved the above output file next to your raw, you might notice that there's a third file called DSC_1000.jpg.pp3. This is a little text file that describes exactly what edits you made to your photo. Just open it in an editor to see how it looks like. Whenever you re-open that raw in ...


7

I just discovered a way to do this. I'm using RawTherapee 4.2, but from your screenshot, I think this feature is in the version you used, too. It's in the toolbar just to the top right of the image. From my system: The blue, green, red, and gray squares let you preview individual color or luminosity channels — they're toggles you can click on. To the left ...


7

Apologies in advance for my English - if someone wonders about my writing style, please keep in mind, my native language is German. I can tell a few things about ASP and Darktable on openSuSE and LR on Windows 7. ASP = Corel Aftershot 1.0.1 (Linux) LR = Lightroom 4 (Windows) DT = Darktable 1.2.1 (Linux, packaged for openSuSE) There was temporarily a ...


7

Very good question :0) When you expose your image you have more detail than you can normally see on a normal monitor. This is more a limitation of the display technology than the raw sensor. This technology is limited to the 256 levels of gray for each channel, but your sensor captures more levels on each channel, this means you have more color diferences ...


7

Always trust the histogram. Unless you diligently adjust the rear LCD brightness every time the ambient lighting changes significantly, you cannot really rely on that. It does sound like you have the LCD set too bright. Check the "LCD Brightness" entry in the "Setup 2" menu.


6

It looks like rawtherapee is showing you the RAW image with a very flat base curve When a program displays a RAW image, it must map the full range of pixel values storable in the 16-bit raw to the lower bit levels (typically 8-bit) which can be handled by your computer and screen. It doesn't necessarily do this with a linear transformation, it will apply a "...


6

Switch to the File Browser view and find your image. Right click on the little green check mark and select "Processing profile options" followed by "Clear". That will reset the sidecar file to the unedited / default state. For partial reverts, in the History pane on the left, click on the step you're interested in keeping - the ones after (below) that will ...


5

There aren't any built in that I'm aware of, but you can just define your own (in Darktable it would be a "style"). I have a base style I start with that adjusts the base curve, increases the saturation slightly, applies profiled denoising (a newer feature which is fantastic), lens correction, etc. A quick Googling for "Darktable styles" brought up the ...


5

Entangle shows the histogram of the JPEG image embedded in the RAW file, in logarithmic scale. RawTherapee, on the other hand, shows the histogram in linear scale, shows the histogram of its pre-processed form of the RAW file, not of the embedded image. This explains the difference. To see histogram of raw data just enable the Show/Hide raw histogram ...


5

The noise is present in the original file. What you have done with your choice of settings is amplified it. Noise is mostly present in dark areas but you have basically applied gain to those areas and hence to noise noise. All channels have noise but the blue and red channels have more noise since they are formed using fewer photosites. In your processing, ...


4

Found it here in the RawTherapee documentation: In Colour Management, you can select an output and/or working colour space. Most likely, you selected one ending in _g10, which denotes a colour space with linear gamma. RawTherapee's main histogram and clipping indicators will also be based on the output profile. Ordinary sRGB has a gamma of 2.4 (...


4

That is the result of the raw processing program not having the correct profile for the said camera. Getting an updated version should resolve your problem. The list of cameras supported by RawTherapee, together with the version number since, can be found at RawPedia.


4

RawTherapee supports Canon PowerShot G16 starting RawTherapee version 4.2.


4

Noise reduction is very computationally expensive process. When you zoomed in it only processes a small part of the image, but when you zoomed out the algorithm would have to process the whole file and then re-scale it, which takes a great deal of time even on modern hardware.


4

There are two possibilities- "Lab Adjustments" on the Exposure tab, or "HSV Equalizer" on the Color tab.


4

Many previews in image editing applications are just that - previews. To get an exact view of what many effects and settings applied to an image will look like you should export the image with the changes applied. Since this can be rather tedious and cumbersome, previews allow us to see an approximation. Many noise reduction tools, including RawTherapee, ...


4

RawTherapee, and other raw processors, usually create sidecar files containing the edits you've made. If you delete the sidecar file while RawTherapee is closed, the next time you open the image, RawTherapee will start with the default profile. If I recall correctly, the sidecar file is named the same as the image with the extension pp3. If you have multiple ...


4

If I view an image in Shotwell, and choose "Open in RAW Editor", make an edit, then go back to Shotwell, how do I get Shotwell to then show the edited image? You probably can't. The RAW editors like RawTherapee are non-destructive editors. You don't edit the RAW image; instead, you apply a series of instructions to the RAW image, and the instructions are ...


4

It takes some time for developers to support raw files from new cameras, even though they may share the same file extension as raw files from previous cameras. Many Linux raw processing programs use libraw. Here is the list of officially supported cameras. A number of cameras on the list do use the cr3 extension, including the Canon EOS M200. Unless you ...


3

On Windows, they can be found at: X:\Program Files\Adobe\Adobe Lightroom\Resources\LensProfiles\ On Mac, they should be here: Applications/Adobe Photoshop Lightroom X/Right-click Show Package Contents/Resources/Lens Profiles Source: Julieanne Kost: Where does Lightroom Install Camera and Lens Profiles?


3

Well, for the example screenshots that you posted, the RawTherapee "exposure" controls consist of a number of things which darktable dedicates several distinct modules to. The "exposure" slider in darktable would be equivalent to the "exposure compensation" slider in RawTherapee, both giving values in EV. I'm guessing the "black" controls are equivalent as ...


3

From the manual: PP3 files If you have saved the above output file next to your raw, you might notice that there's a third file called DSC_1000.jpg.pp3. This is a little text file that describes exactly what edits you made to your photo.


3

As far as I know, there is currently no way to translate PP3 to XMP sidecars, or vice versa. And developers are often reluctant to adapt their program to read data written by another program, especially for formats like .PP3, which can change without warning between program versions*. Even exchanging XMP files from different programs isn't all that evident....


2

I got to know the reason. I used Tone Mapping with high strength. In this case the image is more noisy than the actual shown in the editor.


2

Few (if any) of the codecs in the pack were built by Microsoft. They've been supplied to Microsoft by the camera makers to be repackaged in the same way that most device drivers are not written by Microsoft either. The codec pack can be used by any application that supports WIC (Windows Imaging Codecs). Paint.Net is one popular free (as in beer) ...


2

I overcame the problem by converting NEF files to DNGs with Adobes converter. And I conclude that RawTherapee just doesn't know how to handle NEF files properly, since AFAIK with DCP profile file it should work correctly. While this is not a solution to the problem but a workaround, I'll leave an option open for others to solve the problem and this answer ...


2

You can get different JPEGs from the camera, depending on the camera settings. In many ways, raw converters are like film developers. It would not be reasonable to expect exactly the same results even from 2 different mini-labs printing the same negative, using the same paper and the same chemistry. But the sole reason for the existence of different film ...


2

Exposure can only be corrected as long as there is som information left in the raw data. You can make a nearly white pixel somewhat less bright, and stretch the difference between some almost equally bright pixels (increase contrast), but of course, if the data is clipped (pure white), all you can do is "invent" something by interpolating neighbouring ...


2

It depends what you're trying to achieve from bracketing. There's three basic variables that set your exposure - shutter speed, aperture and ISO. Shutter speed and aprerture both have optical effects on the image that you'll know. Bracketing will usually change one of these, and you can't replicate that pos-capture. ISO on a digital camera doesn't have ...


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