4K HD Wallpaper: Nikon Camera with Nikkor Lens
I'm a fan of Nikon cameras, the photos made with this cameras are impressive. This 4K picture was made by Thomas and it's available under CC0 license for use in various projects (blog articles, templates, apps...) or just to be set on desktop backgrounds and homescreen phones.
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)