Urban Acid is a Photoshop action (or a Lightroom template) that makes
the photo this blue-greenish color and a bit 'washed'.
HDR stands for High Dynamic Range, which means the photo is made from
more than exposures (+2EV, 0, -2EV in this case). To be viewable on our
monitors (which are 8 bit while HDR is 32 bit / channel) there is a
technique called Tone Mapping. So while it's called HDR picture is just
a Tone Mapped 'Normal Dynamic Range' picture :) HDRs are mostly viewed
in special programs that can dynamically change the 'gamma' of the picture.
Regards,
.t
frank theriault wrote:
On Tue, Apr 28, 2009 at 2:26 PM, Timbah! <[email protected]> wrote:
Hi list,
On Flickr people like 3 type of pictures:
Made with Wideangle
Urban Acid 'toning'
HDR
So I've made all of them in one picture:
http://www.flickr.com/photos/timbah/3484020482/
What's Urban Acid and HDR mean?
I like the photo, btw.
cheers,
frank
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