Just got my first adapted lens - a Fujian 25mm f/1.4 CCTV C-mount - and am loving it! Lots of quirks, lots of fun. One quirk puzzles me, though. When shooting with the "Grainy Film" filter, I get 6 evenly spaced bright purple horizontal lines across the VF-2. The lines do not appear on the LCD and do not appear in the final images. Any thoughts?