Review on Desview T2 Teleprompter with Remote Control - 11 inch 70/30 Beam Splitter Glass for iPad, Smartphone, Tablet, DSLR Camera - Ideal for Camera Video Recording by Kip Robinson

I like the design, clean and portable. While it's not easy to switch between phone and tablet (requires a screwdriver), the teleprompter easily attaches to the lens. However, I put it on an 82mm Tamron 24-70mm F2.8. I can see vignetting and part of the screen (I used a 5.5" DSLR monitor) in the image. Using a Canon 50mm is fine, but the lens seems to make a louder noise when focusing.