This App helps you to manage your Nikon DSLR Lens. You can learn the lens basic info, update the lens info and add comment/photo to it. All sample photo in current version were taken with Nikon D750, and some of the photo were taken by DX Lens (for APS-C sensor) ) used on FX (Full Frame ) D750. You can also add your photos to the App, just drag drop to the right bottom photo list.