Approximately 90 lenses have been added to the Lens Distortion Test Comparison Tool
. Newly added lenses include most Nikon lenses and many third party lenses.
Some of you have indicated that a grid overlay would be a useful addition to this tool and I plan to make such a grid optional. If you know of an easy way to create a grid using Photoshop, would you mind emailing me instructions for doing so? Thanks!