Keystoning & Horizon

Keystoning correction ⁽¹⁾

Although not an optical defect per se, keystoning perspective distortion resulting from the camera’s sensor not being perfectly parallel to the subject is something many users would like to have control over, without resorting to the use of technical cameras or special shift lenses. With this new feature, all of your lenses in effect become ‘shift’ lenses, greatly widening your photographic possibilities!

Original image

Keystoning correction by DxO Optics Pro v4

DxO Optics Pro allows the correction of keystoning either through the adjustment of three sliders and a zoom-and-crop function; or through an easy-to-use image overlay feature in which the user simply draws two lines on the image, either a vertical or horizontal, which will become parallel after correction.

A semi-transparent grid is available as an overlay, simplifying the manual keystoning correction adjustment.

⁽¹⁾ Keystoning correction is also referred to as vertical and horizontal linear perspective correction.

Horizon correction

As a companion feature to keystoning, easy-to-use image rotation (horizon correction) is now also included, thanks to DxO Optics Pro’s highly transparent processing engine.

Square-up your image to correct a slightly sloping horizon

Horizon correction by DxO Optics Pro

Photo: Cyrille de La Chesnais

A new automatic tool: the Auto-crop!

The hallmark of DxO Optics Pro has always been its highly automated image corrections and enhancements. Now the software can automatically crop a batch of images that have been corrected for horizon alignment or perspective for example. Of course aesthetic cropping is still – thankfully - up to the photographer.