The project files used in this tutorial can be found here: https://dl.dropboxusercontent.com/u/3834689/CaffeineAbuse/HDR_ProjectFiles.zip
With the chrome ball still selected, press [F3] to open a mini browser and click on the Visibility icon to open the PPG. Uncheck the Shadow Caster and Shadow Receiver checkboxes. While this will exclude it from casting and receiving shadows it still affects the final gathering in the scene. To avoid this, uncheck the Caster and Visible in Sampling attributes in the Final Gathering section of the PPG.
With the ball still selected, from the Get > Property menu choose Render Map. In the Format section of the PPG, uncheck the Square checkbox and set the resolution to 1024 x 512. Click the New button next to the UV title and select Spherical to create a texture projection. Since you’re generating an HDR image you obviously need to use an image format supporting it. Change the output format to OpenEXR. By default reflection are disabled from the render map generation and while this is something you normally want it does counteract the sole purpose the chrome ball. In the Disable Surface Properties section, make sure uncheck the Reflection checkbox. Click the Regenerate Maps… button and you’re done.
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