After a few days of using the LCD hood loupe Attachment on my DSLR, I’ve reluctantly come to the sad conclusion that it just isn’t quite good enough to reliably achieve accurate focus on videos when focusing the camera manually. Obviously, when using auto-focus this isn’t an issue because the camera takes care of that all by itself. But auto-focus can be “jerky” with a lot of bouncing in and out of focus before it locks on, so I’ll only be using auto-focus when it’s necessary – plus auto-focus can be noisy in otherwise quiet situations!