DxO ViewPoint

DxO claims that this can be useful when editing photographs of groups of people where individuals nearest the edge of the frame can seem wider than those at the center.

Users can correct keystoning in order to adjust the perspective of a photograph, either automatically or through manual methods including point selection, placing horizontal and vertical lines, or creating a rectangle.

DxO ViewPoint can also be used to produce creative effects such as generating an extremely shallow depth of field and simulating the use of a tilt-shift lens.

DxO ViewPoint was released on September 5, 2012, and featured tools to allow users to correct keystoning and volume distortions.

[7] PCMag described DxO ViewPoint 2 as “essential for photographers of groups of people, where you need to use a wide-angle lens but your customers won't be happy with folks on the sides having stretched physiognomies”.