I'm dealing with the Purple Flare of Doom/Sensor Grid issue with my Sony F5. And I'm keen to try out a set of mattes for my matte box in the hope that they can help me tackle the problem. However I haven't encountered proper mattes before and was wondering how they mount to the matte box.
I have an Arri MMB-2, so this is the set I'd be looking at:
Do mattes like these take up one of the filter trays? Or do they attach to the front of the matte box somehow?