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I… - A Creative Interpretation of Reality
Photographic slices of existence

Date: 2010-05-30 18:41
Subject: (no subject)
Security: Public
Tags:air, colour, digital, dusk, earth, hdr, manipulation, night, storm, summer

I don't do HDR stuff too often, but the scene was just begging for it.
Eureka! | 4 Comments | | Link

User: neptunia67
Date: 2010-05-31 02:19 (UTC)
Subject: (no subject)
That is a really cool scene. What is HDR?
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Eureka: IRvatar
User: eurekagray
Date: 2010-05-31 03:47 (UTC)
Subject: (no subject)
HDR stands for High Dynamic Range. In the context of photography, the dynamic range of a scene is the difference between the brightest highlight and the darkest shadow. In many scenes, the dynamic range found in nature is wider than what a camera can capture.

There are several ways to compress the dynamic range of an image. The one I used here involved taking a total of seven pictures at different exposures (so from too dark to too bright) and blending them together digitally. There's a lot of choice for how to treat it, from subtle to garish. I went for something in between on this one, rendering it a little outside of what would normally be expected.
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User: darkbunny
Date: 2010-05-31 17:03 (UTC)
Subject: (no subject)
The overall effect makes it look almost computer-generated. Like it was simulated rather than photographed. But I'm told that it's difficult to get HDR to behave exactly like you want it anyway.
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Eureka: Cyberpunk
User: eurekagray
Date: 2010-05-31 19:16 (UTC)
Subject: (no subject)
Well, it is computer generated :) but from photographic source material rather than from a purely constructed starting point. It can be a challenge to produce something that looks natural and contains a high dynamic range, but that's more due to our visual expectations than any limitation in the software. When I have a chance, I'll get a more faithful version of the scene up for comparison.
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