4K HD Wallpaper: Contemplation
The photography with the young man was taken by Steven Spassov in Ottawa, Canada and shared from his courtesy under CC0 license. I called it "Contemplation" and optimized here for use especially in desktop backgrounds and homescreen phones, but because it's under CC0 license from courtesy of Steven can be used in other projects that you might have.
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)