Feb 14, 2017  Fans of free have something to celebrate. The popular open-source RAW photo processor RawTherapee has received a massive update to version 5.0. From all Raw Therapee reviews, you will know that no matter which platform you use, whether it’s Windows/Mac OS/Linux, on the official page you can download software for any platform completely for free. Download and install RawTherapee. Since no manual or user guide is offered for better understanding, this Therapee review will help you. Feb 21, 2008  The great RAW Therapee Manual Feb 20, 2008 I have downloaded the manual for RAW Therapee and I must say it is very, very useful. It explains the various tools in clear,so the tools and the concepts behind them are easily understood even by a numskull like myself. Nice thing is these instructions also may apply to some of the other software.

1. Raw Therapee Tutorials

RawTherapee is computer software for processing photographs.^[2] It comprises a subset of image editing operations specifically aimed at non-destructive post-production of raw photos and is primarily focused on improving a photographer's workflow by facilitating the handling of large numbers of images. It is notable for the advanced control it gives the user over the demosaicing and developing process. It is cross-platform, with versions for Windows, macOS and Linux.

RawTherapee was originally written by Gábor Horváth of Budapest, Hungary, and was re-licensed as free and open-source software under the GNU General Public License Version 3 in January 2010.^[3] It is written in C++, using a GTK+front-end and a patched version of dcraw for reading raw files. The name used to stand for 'The Experimental Raw Photo Editor'; however that acronym has been dropped, and RawTherapee is now a full name in itself.^[4]

The luminance level and regulator fall in the direction of the arrow keys, and the function is not reversed. Pressing the TAB key to house the key is the full size in the middle which is what we threw. Acer Aspire One 722 QSG –. Wide, flat keyboard showed a bit of flex and the critical response felt softer and softer. /acer-aspire-one-user-manual-pdf.html. It is also difficult to find a button because the flat button is well compressed.

• 1Features

Features[edit]

RawTherapee involves the concept of non-destructive editing, similar to that of some other raw conversion software. Adjustments made by the user are immediately reflected in the preview image, though they are not physically applied to the opened image but the parameters are saved to a separate sidecar file. These adjustments are then applied during the export process.

All the internal processing is done in a high precision 32-bit floating point engine.^[5]

Input file formats[edit]

RawTherapee supports most raw formats, including Pentax Pixel Shift, Canon Dual-Pixel, and those from Foveon and X-Trans sensors. It also supports common non-raw image formats like JPEG, PNG and TIFF.^[6][7] It also supports high dynamic range, 16/24/32-bit raw DNG images. Black and decker air swivel user manual.

RawTherapee uses a patched version of dcraw code to read and parse raw formats, with additional tweaks and constraints to parameters such as white levels and the raw crop area based on in-house measurements. Thus, RawTherapee supports all the formats supported by dcraw.

User interface[edit]

RawTherapee provides the user with a file browser, a queue, a panel for batch image adjustments, a 1:1 preview of the embedded JPEG image in the case of raw files, and an image editing tab.

The file browser shows photo thumbnails along with a caption of the shooting information metadata. The browser includes 5-star rating, flagging, and an Exif-based filter. It can be used to apply a profile, or parts of a profile, to a whole selection of photos in one operation.

A toolbox alongside the file browser allows for batch image adjustments.

The queue tab allows one to put exporting photos on hold until done adjusting them in the Editor, so that the CPU is fully available to the user while tweaking a photo, instead of processing photos while the user is trying to tweak new ones which could result in a sluggish interface. Alternatively, it can be used to process photos alongside tweaking new ones, if one has a CPU capable of handling the workload.

The Editor tab is where the user tweaks photos. While the image is opened for editing, the user is provided with a preview window with pan and zoom capabilities. A color histogram is also present offering linear and logarithmic scales, and separate R, G, B and L channels. All adjustments are reflected in the history queue and the user can revert any of the changes at any time. There is also the possibility of taking multiple snapshots of the history queue, allowing for various versions of the image being shown. These snapshots are not written to the sidecar file and are subsequently lost once the photo has been closed, however work is underway on migrating the PP3 sidecar system to XMP which already supports storing snapshots.

Adjustment tools and processing[edit]

• The following Bayer demosaicing algorithms are available: AMaZE, IGV, LMMSE, EAHD, HPHD, VNG4, DCB, AHD, fast or mono, as well as none.^[8]. Raw files from X-Trans sensors have the 3-pass, 1-pass and fast demosaicing methods at their disposal.
• Processing profiles support via sidecar files with the ability to fully and partially load, save and copy profiles between images.
• Processing parameters can be generated dynamically based on image metadata using the Dynamic Profile Builder.
• Exposure control and curves in the L*a*b* and RGB color spaces.
• CIECAM02 mode.
• Advanced highlight reconstruction algorithms and shadow/highlight controls.
• Tone mapping using edge-preserving decomposition.
• Pre-crop vignetting correction and post-crop vignetting for artistic effect.
• Graduated filter.
• Various methods of sharpening.
• Various methods of noise reduction.
• Detail recovery.
• Removal of purple fringing
• Manual and automatic pre- and post-demosaic chromatic aberration correction.
• Advanced wavelet processing.
• Retinex processing.
• White balance (presets, color temperature, spot white balance and auto white balance).
• Channel mixer.
• Black-and-white conversion.
• Color boost and vibrance (saturation control with the option of preserving natural skin tones).
• Hue, saturation and value adjustments using curves.
• Various methods of color toning.
• Lockable color picker.
• Wide gamut preview support on Windows and Linux, while the macOS preview is limited to sRGB.
• Soft-proofing support.
• Color-managed workflow.
• ICC color profiles (input, working and output).
• DCP color profiles (input).
• Support for Adobe Lens Correction Profiles (LCP).
• Cropping, resizing, post-resize sharpening.
• Rotation with visual straightening tool.
• Distortion correction.
• Perspective adjustment.
• Dark frame subtraction.
• Flat field removal (hue shifts, dust removal, vignetting correction).
• Hot and dead pixel filters.
• Metadata (Exif and IPTC) editor.
• A processing queue to free up the CPU during editing where instant feedback is important and to make maximal use of it afterwards.

Output formats[edit]

The output format can be selected from:^[9]

• TIFF (8-bit and 16-bit)
• JPEG (8-bit)
• PNG (8-bit and 16-bit)

See also[edit]

References[edit]

Raw Therapee Tutorials

1. ^'RawTherapee Downloads'. RawTherapee. Retrieved 23 June 2019.
2. ^Schroder, Carla (25 August 2014). 'Raw Sharpening And NoiseReduction with Raw Therapee On Linux'. Linux.com. Retrieved 20 October 2015.
3. ^Hilzinger, Marcel (7 January 2010). 'Free Therapy: RawTherapee as of Version 3.0 Under GPLv3'. Linux Magazine. Retrieved 23 June 2019.
4. ^'RawTherapee - issue #885'. Google Code Archive. 3 August 2011. Retrieved 23 June 2019.
5. ^'The Floating Point Engine'. RawPedia. Retrieved 23 June 2019.
6. ^Leichtenstern, Thomas (October 2008). 'Digital Darkroom'. Linux Magazine. Retrieved 23 June 2019.
7. ^'RawTherapee 4.0.11'. Photoreview.com.au. 6 September 2013. Retrieved 23 June 2019.
8. ^Williams, Mike (23 April 2019). 'Raw Therapee 5.6'. Tech Advisor. Retrieved 23 June 2019.
9. ^'Raw Therapee'. Major Geeks. Retrieved 20 October 2015.

External links[edit]