Alexa sensor is made by on-semi or it was it tower jazz?... I don’t remember. on semi it was. German company. They recently declared they made those sensors, it was a secret until 2 year ago I think.

The special secret thingys on the “super special “ arri sensors is two things. Big pixels, and dual gain access to every pixel. Like dual iso on Panasonic cameras, but is dual iso always on but not at different sensitivities, but getting double the data.

The that is resolved I think in two 14bit images than then is mixed for one final 16 bit image. That’s why noise is grate.

Resolution is perceptual don’t forget that.

That’s it that’s the secret. If Sony would made the A7sii dual gain per pixel as the new ones, they could easy beat Arri if they wanted too.

About the black magic sensors...running they are Sony ones. Sooo... that color science is the only thing black magic has.

For me.

Those “organic film look” is nothing more than that dual noise interpolated to make it feel more filmo like.

Realistically speaking What on semi has is for sure a better lithographic process.

And that is the real difference.

At this level of lithography is like being an specialized alchemist.

That process if for sure better from German manufacturing

another thing that makes Arri different is the electronic firmware that forces saturation to stop increasing after a certain IRE ~150. It was modeled after that same effect in film stock where chroma maxes out and stops increasing, like paint or silver halide. You can make procedural plugins that accomplish the same thing.