ProRes used mainly for mainstream projects that needs a quick turnaround time and low storage environments.
ProRes acquisition is commonly used on major feature films costing $100 million. As mentioned in this article, ProRes 4444 is "the workhorse of professional filmmakers". The ALEXA XR/XT supports the even higher end ProRes 4444 XQ: http://www.arri.com/news/news/alexa-xrxt-supports-new-prores-4444-xq/
...Even though the highest quality ProRes 4444 10bit retains a wealth of "image information", this data is still far less than what you get with RAW.And for serious projects, in post production for example color correction,you need that missing "image information"...
If professional filmmakers have been making $100 million feature films for years using ProRes, it's obvious they don't *need* RAW. Award-winning director Noam Kroll said there is "little to no difference when color grading": https://www.premiumbeat.com/blog/prores-4444-vs-raw-can-you-spot-the-difference/
...Try in the college to work with 4k RAW files to see how taxing is for the computer...
Few cameras used by anyone reading this forum shoot 4k RAW video. If a DOP or 1st AE is using a 4k RAW workflow they won't be reading Mac Rumors to see what computer they need. They will already know this. They won't be playing with a little RAW file in college -- they will be dealing with 50-100 terabytes of material in a time-critical production environment.
However you don't need 4k (whether RAW or ProRes) to make a feature film. 70% of the 2012 movie Act of Valor was shot on the Canon 5D Mark II.
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