These Hyperfocal Sky HDRIs are available free of charge and can be found in the complimentary content section in our store. The original high resolution HDRIs measure 10,000X5,000 pixels, and are available from $39 each. These free versions are provided at only 2048X1024, but will give you an excellent idea of what can be done with high performance HDRIs.

To use these free HDRIs, first register and then download from the samples section of our store.

On the other hand, if you're serious about the quality of your work, and you're interested in using the same HDRI maps that world leading 3D art, game and architectural companies use, you may be interested in this short letter from Hyperfocal Design founder, Jay Weston.