HDRI ?
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Sorry if this is a newbie question but what is a HDRI background?
Im thinking its a photo of a location somehow turned into a back?
Do these background move with the daz model so everything can align properly?
thanks.
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Sorry if this is a newbie question but what is a HDRI background?
Im thinking its a photo of a location somehow turned into a back?
Do these background move with the daz model so everything can align properly?
thanks.
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In general an HDRI image is special in two ways - it's a full 360, zenith to nadir view compressed into a single image and it uses far more data per pixel, enabling it to be used as a light source so that an item placed in the scene will be lit as if it was sitting in the original environment. Most, but not all, HDRIs are sufficently high resolution that they can be shown in the image as a backdrop and a source for reflections.
That’s a brilliant idea thanks for the answer.
So how are these images made?
Those that are based on photos of real places, I believe, involve taking multiple exposures (since the camera can't capture the needed range of light levels in a single shot) on a tripod with a special lens fitting so that everything lines up correctly when fed into the processing software.
That’s a brilliant idea thanks for the answer.
So how are these images made?
so would something like this be of good enough quality https://www.jessops.com/p/nikon/keymission-360-action-cam-101346?gclid=EAIaIQobChMIwOP3iqDu2AIVA54bCh0_zwTDEAQYBiABEgKd0PD_BwE
Seems to be pronciplaly a video camera rather than still, so I don't know if it could take a set of bracketed exposures (assuming it doesn't have the sensitivity to do the job in one shot, which seems unlikely - and I don't see a specification of the imags' bit depth). I also don't know how well the HDRI-geenration software would cope with fish-eye shots, though as I recall there are tools which use special lenses so it may be workable.
As long as your existing camera has bracketing capability and you have a tripod then I would use software like PTGUI.com to do the stitching and tonemapping.
The tutorials on the site are quite useful, you could break them down and do the same steps in recent versions of Photoshop, but the specialist software is much more convenient.
Making brackets into HDRs is pretty easy - I have an older Photoshop, On1 Photo RAW and Affinity Photo. Both of the latter work well for tripod shots, On1 allowing more control and adjustment for shots on a tripod but Affinity will do a better job of aligning non-tripod shots. However, that for a single shot - stitching to gether a lighting HDR, a 360 degree sphere, is not in their repertoire as far as I know.