I have a Canon XL2. I just picked up a Tiffen ND Grad filter, which is a gradient from CTO to neutral density 6, used for shooting the sky and the ground within your camera's lattitude. The problem is that I don't have the type of filters that screw on to my lens, it is the type that is a thick, square plate of glass. I haven't worked with this type of filter yet in school, so I'm not exactly sure how they attach to the camera. My best guess is that these type of filters are for film cameras and not digital, but that is nothing more than a guess. Can anyone help me shed some light on this issue? Someone in my class told me I would need a matte box, but I tried to research this online and could not find one that fits my XL2. Thanks for your help!







