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PlayStation 5 Pro: what does the PS4 image enhancement feature actually do?
PS5 Pro's image enhancement feature for PS4 games gets the Digital Foundry breakdown - to what extent are last-gen games enhanced for 4K screens?
Looking at Metaphor Refantazio's PS4 version on PS5 Pro, the 1080p art benefits with image enhancement, but the actual 4K artwork in the PS5 code gets cleaner linework and more detailed texture. In other words, the enhanced mode essentially inherits the image quality characteristics of the existing game, including its anti-aliasing and it's not necessarily more stable across multiple frames. This applies equally to 2D art, as some of the artwork in a game like the first Ace Attorney collection doesn't hold up that well and in some instances, I think the image resolve can actually look a bit messier than before.
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