![]() ![]() While distortion correction is visible in the full image preview, chromatic aberration and distortion correction are not reflected in the detail crop windows, only in the fully processed result image. ![]() Distortion, vignetting and chromatic aberration correction are all supported in raw files, but only distortion correction is supported in non-raw files.The vignetting correction feature however is linked to the Flat Field tool, so that when you select a flat-field image then the LCP's vignetting correction will have no effect. Be careful that you don't overdo the distortion and vignetting correction by forgetting to turn the manual tools off if you use the LCP equivalents. This lets you use the manual controls in addition to the LCP profile for artistic reasons or if the LCP fails to sufficiently correct a parameter (which happens on some extreme distortion occasions, like with some heavily distorting compact cameras). The Lens Correction Profile tool's distortion correction feature can be used together with the manual Distortion Correction tool, and the vignetting correction feature can be used together with the manual Vignetting Correction tool. Select an Adobe LCP file (read the guide on how to get LCP profiles) to automatically correct geometric distortion, vignetting and lateral chromatic aberrations. These are text files which describe the distortion, vignetting and chromatic aberrations (CA) of a lens, so that simply loading this file in LCP-capable software such as RawTherapee will correct these issues. Or don't care at all and have fun!Īdobe provides and offers tools to create and share what are called Lens Correction Profiles. Higher values for both sliders produce heavy distortion, so use with care. Vertical Very useful to correct 'falling lines', e.g. Horizontal When your picture was taken while you were slightly off-center of the object, you can correct this (within certain limits) with the horizontal slider. ![]() If you zoom the preview in, then RawTherapee will use this higher resolution preview image when calculating the transformation, so to see what the saved file will look like, just zoom in to 100% File:Gtk-zoom-100.png.Įxample of vertical perspective correction. But don't worry, when saving the image RawTherapee uses the full resolution image, so it will be sharp. The former will be softer than the latter, though rotating the former will take less time than rotating the latter, which is why RawTherapee does that. Rotating it 5° will not be the same as rotating the full 12.1Mp image and then scaling it down to 600x400px. Lets assume you are editing a Nikon D700 image: 4256×2832px (that's 12.1 megapixels), and the preview image's size is 600x400px. Because of this, the preview image can become soft. To keep the preview fast, RawTherapee uses the preview image of the current zoom level when applying these transformations. ![]()
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