Nik Collection 4 By DxO is the world’s most exciting and creative suite of photo plugins for Adobe Photoshop. With a range of stunning visual effects and some brilliant new editing tools, Nik Collection 4 gives you total creative control over your photos!

Perspective Efex automatically corrects geometric distortions in your photos. It’s the quickest and easiest way to fix even the most complex geometric distortions. Either by using reference lines or automatic correction, Perspective Efex can correct any unsightly leading lines in urban and architectural photos, no matter how complex. It’s your best tool to correct keystoning.
Overview of Nik Collection by DxO Features

More than 200 presets
Unlock creativity from inside adobe photoshop
Non-destructive workflow for adobe lightroom users
Geometric corrections
Miniature effect
U point - designed for precision
Color efex pro – your launchpad to creativity
Black & white photography
Maximum creativity from a bygone age
Get high dynamic range in a click
Get yourself a sharper image