We finally have some expert analysis of how PS5 Pro’s new PS4 Image Enhancement toggle works, and what it actually achieves. Digital Foundry has released a rigorous test, and the results are noticeable if unremarkable.
It’s worth reiterating, once again, that this feature is not the priority of the PS5 Pro. Effectively, it adds a little more clarity to games running in backwards compatibility – although it does appear to largely target titles unpatched for the PS4 Pro or running at 1080p or lower.
So, what’s it doing, then? Well, Digital Foundry doesn’t have a definitive answer, but it hypothesises that it’s using machine learning to upscale the image and make it “more palatable” on high resolution panels, like 4K televisions.