I am writing about this program before I’ve had a chance to test it. But if you like what it promises, you can download a copy of PTLens at http://epaperpress.com/ptlens/index.html. There’s a free trial that will for for 10 shots....

It is amazing how often Chromatic Aberration (CA) shows up in my images. I think this is just a testament to how hard the high resolution digital sensors push our modern optics. And I have the best Nikkor glass available...