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02-14-2006, 04:09 AM
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Rep Power: 0  | real high dynamic range? i'm new to all this, but i've grasped that a hdr image does not necessarily have to contain a high dynamic range, they vary in quality... is there a quick way to measure the quality/range of a hdr image? Last edited by kimgar; 05-05-2006 at 09:32 AM.. |
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09-29-2011, 02:35 AM
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Rep Power: 0 | Dynamic range can be measured in exposure value (EV). Some websites selling HDRIs (like our website) offer these values for their HDRI panoramas. The exposure value alone does not make good high dynamic range images. For 3D lighting it is important that the light source (the sun for example) is as dark as possible. This is necessary for sharp shadows and caustics. Very dark parts of an HDRI do not really have to be as bright as possible to get nice results. To sum this up: high dynamic range towards bright areas is important, high dynamic range towards dark areas not really. Last edited by 48design; 09-29-2011 at 02:41 AM.. |
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01-16-2012, 08:06 AM
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Rep Power: 0 | The free hdr creation software Picturenaut exactly offers this. When opening an hdri file at the bottom left of the window you can see the dynamic range of that image. Sorry for resurrecting this old thread, but wanted to share this info. |
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