The lens distortion correction in Hugin is known as Lens Calibration. Just click the Straight lines in Hugin to set up some straight lines, which pass near the edge of the image and across the image near the image center. PTLens is an alternative for DxO ViewPoint to correct lens pincushion/barrel distortion, vignetting, chromatic aberration, and perspective. It deals with barrel distortion, pincushion distortion, and even complex distortion. There are multiple shift lenses you can choose to correct lens distortion. When you need to fix the lens distortion, you only have to set the presets. The advanced algorithm for complex distortion makes the program much more excellent than others to handle combined distortions. Like DxO ViewPoint and other alternatives, you can also use the program as a plugin for Photoshop CS5/CS6/CC to get the desired result. To perfect your images as a profession, PTLens is one of the lens distortion software. Just as the name of Fisheye-Hemi, it is a professional set of plug-in filters that corrects hemispheric fisheye lens distortion. ![]() As the DxO ViewPoint alternative, you can use the program with Photoshop, Apple Aperture, and compatible applications. Fisheye-Hemi includes three plug-ins that support many camera and fisheye lens combinations. The circle version works best with a lens and camera combination that covers 180 degrees horizontally across the field. And the Full Frame version works with similar photos without black edges in the corners.
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