For the most part, Windows 10’s Sun Valley appears to be an
update focused on cosmetic improvements like rounded corners
new icons. But it also packs some decent
enthusiast-friendly improvements under the hood, and one new
feature is HDR support for colour managed apps like Adobe
Photoshop and Lightroom.
In Windows 10 Sun Valley Update, the HDR behaviour is
substantially better than before for colour managed apps. For
those unaware, HDR is a feature available on relatively
new monitors and it enables support for vibrant colours,
emphasizing the contrast in an image.
In Windows 10 October 2020 Update or older, apps are limited to
the traditional sRGB colour gamut. With the Sun Valley update,
Microsoft plans to offer a dramatic visual upgrade with HDR
support, which means apps can now finally get accurate colour
and access to the true capabilities of your monitor.
Initially, HDR support will be added to apps that use the
International Color Consortium colour profile. Supported apps
include Lightroom Classic, CorelDraw, Photoshop, etc. For
apps like Photoshop and Lightroom, HDR is used to enhance
brightness and normalize the colour levels across the supported
With HDR, apps can now display bright elements while still
maintaining dark shadows across the photo you’re editing.
It’s worth noting that the Sun Valley update doesn’t
automatically display your apps in HDR. By default, it would be
still standard dynamic range mode. If you’re interested and you
have an HDR-compatible monitor, you need to head into Windows
10’s legacy settings and activate HDR.
To enable HDR in Photoshop and other apps, close the app and
right-click on its icon. Click on Properties and navigate to
the Compatibility tab and select “Use legacy display ICC colour
management” under Settings.
Once done, open Start > Settings > System > Display
> HDR and WCG settings. On the next screen, enable the
toggle for HDR mode.
For gamers, Microsoft is working on another feature called
“Auto HDR”, which enables HDR support for certain games
automatically. If you have an HDR-ready monitor, Microsoft
will automatically enable the HDR feature and users will notice
improvements when playing games that depend on lighting and
In addition to the new HDR mode,
Microsoft is also said to be working on a new set of fonts
for Windows 10 native apps, settings, legacy pages like Control
Panel, and more. In the preview builds, Segoe UI Variable font
has been enabled for select apps, touch keyboard and modern