4K HD Wallpaper: The Photographer
This is the 2nd image featured in gallery from portfolio of talented - Alice Rouse - and is shared from her courtesy under CC0 license. The photography was took in Boston, USA and it's available here for download especially as phone and desktop background, but if you think it's useful for your projects can be applied there too.
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)