Tuesday, December 19, 2006

HDR Imaginnings

So what is HDR? HDR stands for High Dynamic Range and is a technique used to create eye popping, jaw splitting timages that take in more of the color spectrum than what a single exposure can capture. Cameras aren't quite like the human occulas, our eyes adjust to different gradations of light and record the entire scene. When you see those brilliant sunsets you are seeing multiple levels of exposure while a camera can catch a single exposure at such and such fstop/time. HDR is a way of create images from multiple exposures of a single scene so that you can convey more color, more depth and more of the gradients that a camera might miss when shooting something that is the product of single exposure. I took some of the raw files from my trip in Russia and applied some Ton Mapping filters to them. I didn't have the necessary triplicate exposures to create even more surreal HDR images from them, but its possible to do it with .RAW files. The improvement is noticeable if you look... in addition I did little experiment using a single light source, my windows and a sliver of my living room to play with some of the HDR tools and the triple exposure, +2/0/-2 EV, that's up there too... so if you want to see what HDR can do, click on the image below...

St. Petersburg, Church HDR

St. Petersburg, Church, HDR

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