Once you’ve positioned and framed your shot, simply select “High Resolution” in the Ansel in-game overlay and you can capture screenshots tens of thousands of pixels in size.
These super resolution screenshots can be viewed in Irfanview and other applications, and shared online via file sharing sites, forums, or any other service that supports the uploading of large files.
But why would you want to capture screenshots at super resolutions tens of thousands of pixels in size? Well, the resulting screenshot is almost entirely free of aliasing, detail is significantly sharper and clear, crops of any part of the screenshot are at maximum fidelity levels, and screenshots can be downsampled to lower resolutions for wall prints, posters, or super high-quality desktop wallpapers.
By saving at such a high resolution you can view incredible amounts of detail in games - take The Witcher 3: Wild Hunt screenshot below, for instance. In that image, Geralt of Rivia’s eye is less than a pixel in size, yet we can zoom in and see his eye and entire face in full detail. Below Geralt is another room that players pass through at the start of the game - by zooming in there we can read the words in the books in full detail.