Hi Tony,<div>Have you considered capturing it with a fisheye instead or a mirrorball?</div><div><br></div><div>I saw samples of Red Scarlet + Sigma 4.5mm lens and it's pretty impressive:</div><div><a href="http://paulbourke.net/miscellaneous/domefisheye/cameras/">http://paulbourke.net/miscellaneous/domefisheye/cameras/</a> (see last pictures of this page).</div>
<div><br></div><div>In 4K it crop the bottom and top, but in 5K you get a full dome image (180x180) (from that to a full panorama (360x180) you would need multiple shots, though it may be overkill).</div><div>Either way I think you will have a better luck by pre-processing the input into any of the standard inputs that blender can take. Or the processing time is your bottleneck?<div>
<br></div><div>My 2 cents,</div><div>Dalai</div><div><br></div><div><br><div class="gmail_quote">2012/6/20 Tony Mullen <span dir="ltr"><<a href="mailto:tony.mullen@gmail.com" target="_blank">tony.mullen@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
<br>
I'd love to use HDR video from a Red Epic as a light/reflection<br>
source. It seems like the best way to do this would be to use an HDR<br>
video of a mirror ball, and use the mirror ball mapping. It seems like<br>
it would be quite helpful to be able to crop the image from within<br>
Blender. For example, to place and scale a circle in the UV Image<br>
editor to tell Cycles what part of the video frame to use as the<br>
mirror ball.<br>
<br>
Even cooler would be to be able to keyframe the size and placement of<br>
the cropping circle, so that you could "rotoscope" the position of the<br>
mirror ball within the frame, enabling the camera to move more more<br>
freely (the light source would then be mapped to follow the camera's<br>
movement within the 3D space).<br>
<br>
Does this sound like something that can be done, or is anybody<br>
planning to implement something similar?<br>
<br>
Regards,<br>
<br>
Tony<br>
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