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Hi everyone. I'm trying to get some shots with a 9mm Cooke lens I have for my Arri S/B, I'd like to put some filtration in front of it. The problem is that, due to the wide field of view, I'm still getting the interior of the matte box on the edges of the picture frame. I'm trying to figure out how to rig something but I thought I'd put my query up here since I know others have run into and dealt with this before. Thanks in advance for any help.

Hello, Good morning. I am a set designer in the film industry who is often asked about the field of view on a particular lens -- so that we can see how much of a set the camera will see. I ask them what camera package they are using, then the aspect ratio, and then the lens. The missing piece of information, it seems to me, is the size of the film frame. Is this correct? If I know the size of the film frame (in inches or millimeters) and the lens (in millimeters, of course) then I can draw a diagram showing the lens in front of the film frame and figure out the field of view (as an angle). I wanted to just confirm that this is correct. Now this applies to celluloid film. Does it also apply to digital cinematography? If I know the size of the chip, would I be able to figure out super-accurately and will full confidence what the field of view angle would be? As you can imagine, when we are designing sets, it is essential that we know how much of the set the camera can see. When we film on location, where we can not wild out a wall, this is, of course, even more important. Thank you. Cosmas Demetriou Member Local 800