When you open raw files in other software, what you are usually seeing is not the raw data, but the embedded, processed JPEG image. Most raw files contain a JPEG image of the same full resolution as your camera can shoot, and some raw files contain as many as three JPEG images differing only in resolution. Every DSLR raw file contains a processed JPEG image.Increasing exposure compensation makes noise more apparent regardless whether it is your camera or RawTherapee which does it, but other than this RawTherapee does not "add noise"! Many cameras apply noise reduction to the JPEGs (behind your back) to lower the noise level after increasing the exposure compensation, so you should expect there to be a difference between your out-of-camera JPEG and RawTherapee's image if noise reduction in RawTherapee is not enabled. RawTherapee shows you the real raw data which may mean your photos appear dark, so it is up to you whether you apply the required exposure increase and how you go about doing so, whether by using the Exposure Compensation slider or one of the various tone curves. When your camera (or other software) processes the raw file it increases exposure compensation by the same amount, making the brightness appear correct and hoping to recover some highlights in the process. Most cameras also underexpose every photo you take by anywhere from -0.3EV to even -1.3EV or more, in order to gain headroom in the highlights. Some cameras, particularly low-end ones and Micro Four-Thirds system, may also apply lens distortion correction to not only fix barrel and pincushion distortion but also to hide severe vignetting problems. Exactly what gets applied depends on the choices your camera's engineers and management made, but usually this includes a custom tone curve, saturation boost, sharpening and noise reduction. Even if you set all the processing features your camera's firmware allows you to tweak to their neutral, "0" positions, what you see is still not an unprocessed image. It processes the raw image in many ways before presenting you with the histogram and the preview on your camera's digital display. Your camera does not show you the real raw data when you shoot raw photos.There are three things you must know first to understand what is happening here: What gives? Witches, aliens, possums, or by design? It does not take into account the " Output Profile" section of the " Color Management" tool.Ģ.1 Eek! My Raw Photo Looks Different than the Camera JPEGĪfter opening a raw photo you will notice that it looks different, often worse - darker, less sharp, more dull, lacking contrast, more noisy - than your camera's JPEG, or than the same raw photo when viewed in other software. The image you see in the preview is taken from the working profile's color space and converted into the monitor profile's color space, if a monitor profile is loaded, or into sRGB if one is not. These tools are marked in the interface with a "1:1" icon next to the tool's name. Note that the effects of some tools are only accurately visible when you are zoomed in to 1:1 (100%) or more. ![]() The preview will show you the effect of all the adjustments you make. This preview is generated from the actual raw data by processing it according to the settings either you manually set, or those that are stored in the processing profile used when opening that photo, as specified in " Preferences > Image Processing > Default Processing Profile". The central panel holds a preview of your photo. You can switch to " Multiple Editor Tabs Mode" (METM) by going to " Preferences > General > Layout", however each Editor tab will require a specific amount of RAM relative to the image size and the tools you use, and also the Filmstrip is hidden in this mode, so we recommend you first give SETM a try. By default RawTherapee is in " Single Editor Tab Mode, Vertical Tabs" (SETM) which is more memory-efficient and lets you use the Filmstrip (described below). ![]() The Image Editor tab is where you tweak your photos. ![]() 2.3.1 Red, Green, Blue and Luminosity Preview Modes.2.1 Eek! My Raw Photo Looks Different than the Camera JPEG.
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