I took most of these photos either with Canon PowerShot A610 or with Canon EOS 350D with various lenses (most commonly I used 12-24 f/4.0, 60 f/2.8 Macro, 70-200 f/4.0). Some photos were post-processed on the PC (there was a huge post-processing in case of HDRs), but most of them were only resized. I kept original EXIF info in all photos, so you can see the exact camera model and exposure parameters in them.
You can click on all images for a larger version.
HDR stands for High Dynamic Range imaging. In this technique you take a few shots of the same scene with different exposure values. Then you combine all images together into one image with high dynamic range and perform a tone mapping to reduce the range and present the image on the screen in a traditional, low dynamic range way. You can read more about it on Wikipedia.
There was time when I took photos for the Wikipedia. You can view them on Wikimedia Commons.Site index.