“3D photographers will be familiar with trying to take closeup photographs with wide image pitch 3D devices. The 3D effect depends on the parallax between left and right images, but too much parallax makes for unnatural 3D, which is difficult to fuse. A 3D lens with a 50mm stereo base is very good for 3D photographs in which the subject is 1.5 – 3 meters away. At the same distance, a 90mm stereo base 3D lens would produce image pairs with excessive parallax, where left and right images are too wide apart to fuse. The 50mm stereo base lens however would not be capable of producing spectacular 3D at 5 meters or more away.”
The parallax compensation while focusing is the big thing that got my attention. As the ad copy says excessive parallax will mess up a 3D photo. My only wish would be that the lens would communicate it’s f-stop to a digital camera so you could use aperture priority to make it easier for faster shooting.