This is probably a really simple question but I bought a used 4.5" close-up filter which is 114mm several years ago. It has no thread on both sides. How do I use it with a 4x5.65" matte box? I have the Tilta MB-T04.
Just an aside, looking at this matte box (and I can’t say for certain) it looks VERY similar to the one made by JTZ. The JTZ filter holders are a lot cheaper if that’s the case.
It might be worth dropping an email to JTZ (Fotga) to see if they have anything available? That matte box has been rebranded by Shape as well by the look of it.