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HDR Testing
Following on from the SDR results on the previous page, here we re-test the relevant areas of the display with HDR enabled.
As with the FO27Q3, Gigabyte provides a number of different HDR modes, here we focus on the two I feel are most relevant – the HDR and HDR Peak 1000 options.
Brightness
In terms of brightness, they behave exactly as you'd expect – the HDR mode is basically the True Black 400 mode, whereas the Peak 1000 mode hits over 1000 nits for the 1% and 2% APLs before dropping off as the window size increases.
Greyscale
Overall colour setup is very similar between the two, but we can see from the EOTF curves that behaviour is quite different.
The Peak 1000 mode, for instance, is deliberately too bright across the curve – that means it's not technically accurate, but I prefer this approach to the typical Peak 1000 nits modes which roll off too early.
The HDR mode is technically a lot more accurate, but does look darker in practice and obviously can't hit the same luminance as the 1000 nit mode. Which mode you will want to use is up to you – I personally quite like the bright presentation of the 1000 nit mode, but if you want a more ‘as the artist intended' approach, then the standard HDR mode will be the way to go.
Colour Accuracy
Either way, colour accuracy itself is very similar regardless of mode, with just the 100% cyan and blue channels causing issues, which is to be expected given the monitor doesn't cover the whole Rec.2020 space.
