High Dynamic Range 


To jump straight to the HD View demos click on one of the links below.  The technology that enables these demos is described on this page.


HDR Examples
HDR Images
HDR Survey
Mark Fairchild's HDR Survey
Color Examples
Wide Gamut Demo

The traditional process of viewing a photograph in a browser begins with the camera compressing and outputting an 8 bit Jpeg image. This leaves little flexibility downstream to adapt the image to current viewing conditions.

       

In contrast, HD View leverages new encodings such as JpegXR and modern GPUs that recognize floating point formats to maintain most of the bit depth and gamut of the light in the real world. Only at the last step does HD View adapt the current view of the image given the monitor properties to create an optimal display.

       
Notes:
1: Our ability to see light spans the range from starlit to the sun reflecting off snow: about 1 Billion to One ratio.
2: Jpeg images are typically encoded in an sRGB gamut optimized for the 8 bit restriction.
3: Raw images carry ~10 bits of depth, multiple exposure bracketed shots can lead to higher dynamic range.
4: Image editing software can combine bracketed shots into high dynamic range images.
5: JpgXR is an evolving standard that can encode each channel in a 32 float value, and thus can also afford a wider gamut.
6: HD View optimizes the mapping to the bitdepth of the monitor based on the current image portion in view.
7: New monitors can support greater gamuts than the 8bit sRGB. HD View is also color managed to use the monitor profiles.
    Future monitors that can display high dynamic range will be automatically supported.