Dosch HDRI: Stormy Skies contains 20 HDRIs.

The resolution of the Spherical Map HDRIs is 13,196 x 6,598 pixel. Additionally, each HDRI is provided in the resolution of 2,000 x 1,000 pixels.
 

High Dynamic Range Images (HDRI) are a perfect solution for the realistic lighting and environmental imaging of 3D scenes.

HDRIs are 360-degree panoramas for all kinds of renderings in the areas of product visualization, CGI, real-time rendering, which are illuminated with the help of IBL (Image Base Lighting).
Outstanding reflections, impressive lighting moods and real-looking environments are the result.

And each HDR image is provided in the industry standard .HDR. So they are useable in most rendering applications.