We ship this camera with your choice of the standard Model A lens, or a less fisheye 6mm security camera lens that gives a flatter image.
But we also sell bare lenses so you can mix and match. We offer 6mm and 8mm security camera lenses, for $6 each, and we also offer the standard A Lens, for $15.
Each of these standalone lenses ships with an IR cut filter installed, which removes light in the IR spectrum and gives you a "normal" image in daylight.
To capture NDVI infrared images, for plant analysis, you may want to try out Infragram modified lens for Mobius ActionCam. It has been factory-modified to replace the IR cut filter with a red color filter that allows for analyzing plant health.