High Dynamic Range
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Transcript of High Dynamic Range
![Page 1: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/1.jpg)
High Dynamic Range
![Page 2: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/2.jpg)
![Page 3: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/3.jpg)
![Page 4: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/4.jpg)
The human eye can see about 12 different exposures of light:
What is HDR?
![Page 5: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/5.jpg)
But a camera only sees about 5 exposures:
What is HDR?
![Page 6: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/6.jpg)
These 5 exposures are set by you (or the camera’s Auto mode!):
What is HDR?
![Page 7: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/7.jpg)
These 5 exposures are set by you (or the camera’s Auto mode!):
What is HDR?
![Page 8: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/8.jpg)
You can’t pick up the extreme detail in the shadows and highlights:
The Problem
![Page 9: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/9.jpg)
You can’t pick up the extreme detail in the shadows and highlights:
The Problem
Too Far Apart!
![Page 10: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/10.jpg)
Take three photos at different exposures:
The Solution
![Page 11: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/11.jpg)
Take two or more photos at different exposures:
The Solution
![Page 12: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/12.jpg)
Take two or more photos at different exposures:
The Solution
![Page 13: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/13.jpg)
Take two or more photos at different exposures:
The Solution
![Page 14: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/14.jpg)
Take two or more photos at different exposures:
The Solution
All 12 ‘Exposures’ Covered
![Page 15: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/15.jpg)
Take two or more photos at different exposures:
The Solution
There is a way to get the same result using a single RAW photo – but that’s for
another day
![Page 16: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/16.jpg)
Then Photoshop them together
![Page 17: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/17.jpg)
Then Photoshop them together
![Page 18: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/18.jpg)
Dead Easy!
![Page 19: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/19.jpg)
BUT THERE’S A PROBLEM…
![Page 20: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/20.jpg)
True HDR needs to use 281 trillion colours (16 bit)
To discourage professional photographers using PSE, Adobe limits it to a mere 16 million colours (8 bit)!
But luckily it can be faked…
Photoshop Elements GEEKALERT!
![Page 21: High Dynamic Range](https://reader035.fdocuments.us/reader035/viewer/2022062704/555bdf7dd8b42a33078b4901/html5/thumbnails/21.jpg)
There’s free (and paid for) software that will do the job for you:
HDR Photomatix HDR Fusion …and others
…or use layers and blending modes in Photoshop…
Free HDR Software