I was looking for a diffusion filter (needs to be circular, 77mm) to use with new digital sensor cameras. My goal is to take the edge off the 4k sensors, making the overall image more creamy, but without halation on the highlights. Something that would also help with fine lines that sometimes create aliasing would be nice (I know OLPF would be the best choice for that particular issue, but maybe a diffusion filter would also help with that).
The only diffusion I've tried was the Hollywood Black Magic 1/4 which I liked a lot, but found them to halate a bit too much. I also found that, when shooting against a light source, it creates flares in the form of tiny spots (which I assume has something to do with the inner pattern of the glass in the filter).
Any ideas? I was thinking something that would ressemble the look Paul Thomas Anderson got from his Phantom Thread. I know he used Low Cons but then again, he was shooting film, so that's a whole different ball game. Maybe Tiffen Ultra Contrast? Digi Con seems to be pretty popular, but they don't make them circular, do they?