Here's a test of the new GT35pro Elite for larger camcorders. I used a el-cheapo Kenlock 28mm f2.8 wide angle lens (nikon mount) for this test on a nice sunny day. No problems closing the aperture all the way to f22 and still no vignetting and no grain or grain patterns. This is more difficult to achieve as the lens diameter is 72mm and all optics inside my adapter is larger and more expensive. http://www.vimeo.com/1990189