Well there is no Witcher 3 Functionality for Screenshots.

I take screenshots of games in 2 ways.

If you are playing Witcher 3 on Steam you can press F12 to take a screenshot while you are playing.

NOTE: This was the default key that came with my installation. You can change it in the settings.

If you have it on GoG you can open it as a non-steam game in steam and still use the functionality.

The second option for me is using MSI Afterburner.

To enable screenshots you can:

1. Open MSI Afterburner
2. Go to Settings
3. Open tab "Screen Capture"
4. Set Default Key and desired folder for the shots
5. Open game and take screenshots at will

With MSI the advantage is that you can even choose the extension of the images generated.

Hope I helped

Well there is no Witcher 3 Functionality for Screenshots.

But Yes you can easily take screenshots of The Witcher 3.

I take screenshots of games in 2 ways.

Steam Way

If you are playing Witcher 3 on Steam you can press F12 to take a screenshot while you are playing.

NOTE: This was the default key that came with my installation. You can change it in the settings.

If you have it on GoG you can open it as a non-steam game in steam and still use the functionality.

MSI Afterbuner Way

The second option for me is using MSI Afterburner.

To enable screenshots you can:

1. Open MSI Afterburner
2. Go to Settings
3. Open tab "Screen Capture"
4. Set Default Key and desired folder for the shots
5. Open game and take screenshots at will

With MSI the advantage is that you can even choose the extension of the images generated.

Hope I helped