Today I present a seminar Extending Dynamic Range. Extending dynamic range is one of the fundamental challenges of photography since it’s invention. All forms of visual representation map the appearance of a high dynamic range scene into a low dynamic range medium (typically print). There have been many approaches to solving this problem throughout history. Now, with new technology, there are new approaches. HDR merges are popular now. In time, all of our imagery will be able to incorporate increasingly high dynamic range information.
Here’s a comparison of contrast ratios from very high dynamic range self-luminiscent objects to low dynamic range prints.
sun to starlight 1,000,000,000,000:1
human vision w/ dark adaptation 100,000,000:1
Spherocam HDR camera 50,000,000:1
Brightside monitor 200,000:1
human vision – single view 10,000:1
b/w negative film 10,000:1
typical DSLR 500:1
LCD monitor 400:1
CRT monitor 200:1
paper – best possible 100:1
paper – typical 50:1
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