Euphoria - Texture in the bokeh

[Alexander Flatau]

Hey guys,

I'm in the process of filming a project in Germany and would like to follow the camera work of Euphoria S1, with lots of emotional lighting.
I only have an Alexa Mini, so the depth of field will probably be quite different as they used an Alexa 65 with a very fast T1.6 lens.
Anyway, I just realized a really great pattern or texture in the bokeh and I'm pretty sure it's NOT the light source itself. So maybe it's some kind of filter?

Do you guys now, how to archive this nice effect? 

Edited March 24 by Alexander Flatau

[Jeff Bernstein]

David Mullen, elsewhere on this site, speaking of Psycho (1960), explained, unless I read it wrong, how a grid effect in a bokeh is a result of the manufacture of filters.

 

e.g.

 

Mullen. Mitchells weren't the greatest diffusion, they tended to blur focus too much. They used a pattern of etched diamonds in a chain link fence design, sort of like the glass equivalent of a net weave.

 

https://cinematography.com/index.php?/forums/topic/100632-does-anyone-have-information-on-the-mitchell-variable-diffusion-filter-and-any-ideas-to-make-a-modern-implementation/#comment-583822

 

 

 

 

Edited March 24 by Jeff Bernstein

[Alexander Flatau]

Thats great, but do you know what filter Marcell Rév used in Euphoria? 

[Jeff Bernstein]

Unfortunately, in the following detailed articles on the cinematographic technics of Euphoria, Marcell Rév mentions only the word "filters" :

https://theasc.com/articles/euphoria-rev

https://www.kodak.com/en/motion/blog-post/euphoria/

 

The technical geniuses of Cinematography.com should, perhaps in hours or days to come, answer your question with specificity.

[Montell Taraschewski]

I’m pretty certain the pattern is from a Mitchell Diffusion Filter. Have shot with them recently and have come a cross a similar pattern in the out of focus parts of the image. 
 

Here’s a zoomed in still from that project. 
https://postimg.cc/JGFSYz9V