PS4 Pro support has been uneven among different developers, with some game showing sizable visual improvements compared to the older iteration of the console even on standard 1080p screens, like Final Fantasy XV or Watch_Dogs 2, and others that required careful observation to spot the differences, like Uncharted 4: A Thief's End (that admittedly, is already gorgeous on standard PS4). Yakuza 6: The Song of Life, that was recently released in Japan, belongs to the second group.

In order to spot the differences, we captured a batch of 1080p screenshots reproducing exactly the same angle and situation on both PS4 Pro and standard PS4 with an Elgato Game Capture HD 60, and saved them in lossless PNG in order to retain all the visual quality. The game's day/night cycle isn't dynamic, but is tied to story progression, so this made the process easier, as it removed the need to match the position of the sun.

Below you can see each screenshot in both versions, with PS4 Pro coming first, followed by standard PS4. Keep in mind that they’re big files, so give them time to load. You might also want to hold off from loading them on a mobile device if you are on limited data, as they’ll eat your megabytes up quite fast.

The frame rate appears to be capped at 30 FPS on both models,  and the spotting the differences requires squinting. The only relevant difference appears to be native resolution, higher on PS4 Pro, resulting in better overall image quality and more visible details, especially in the distance. Antialiasing also benefits indirectly, even if aliasing is still quite visible on PS4 Pro.  The image pair in which this is the easiest to notice is the one portraying the green netting of the batting center.

The difference in resolution appears to be more visible in gameplay scenes that during the game's gorgeous in-engine cutscenes, but on during cinematic sequences the out-of-focus blur appears to be visibly thicker on standard PS4, while on PS4 Pro more details remain visible in the distance.

This is pretty much it. The game looks great on both consoles, but the PS4 Pro will give you a small but visible (especially in motion) improvement in image quality thanks to an increase in native rendering resolution. That's certainly better than nothing, but other games certainly support the new console better.

That said, having played the game for quite a few days now, I can say that it's awesome, and that's what matters the most.