Iphone HDR
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Hi Guys,
I've just seen that the next update to the iphone will include the ability to take HDR pictures. I was wondering if I could use these when rendering? For example, if I want to render something in my house and use an image of my kitchen as a backplate image could I use the HDR picture I take from the iphone the create the reflection in the object I'm rendering?
Just a thought as it would be very useful to be able to do that.
Puck
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hmm.. you can do that already.
hdr just means the picture is going to have more info in there from light to dark.. closer to what the human eye can see..
ie- you can see a blue sky and a cat sleeping under a bush at the same time.. a camera can't (well, bw film comes close with it's 12 or so stops of dynamic range).. depending on exposure settings, a digi cam will either see a blue sky but the shadows will be blocked up so you can't see the cat -or- you'll see the cat fine but the sky will be blown out white..
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I remember once seeing an impressive example of what hdr is capable of. The example hdr image was a lit light bulb. (The image in that example was created from a set of photos each taken with a different exposure. My understanding is that the technology has developed with some cameras now capable of creating the hdr image in one shot). Because of the wide dynamic range in the light bulb image it was possible to adjust the image in software until the logo printed on the end of the bulb could be seen!
Wikipedia is a good place to learn about the technology: "The wider dynamic range allows HDR images to more accurately represent the wide range of intensity levels found in real scenes, ranging from direct sunlight to faint starlight".
Regards, Ross
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