Yes, this is a photograph taken with a Pentax K10D. Actually it is ten separate photographs (five for the left side and five for the right side) taken at different exposures and combined into one image each and tone mapped. In other words an HDR image (high dynamic range). I then created the red/cyan anaglyph image from those two images.
Yes, all my anaglyphs except the fractals are photographs (none are conversions or CGI). They are either from a film stereo camera with the resulting slide images being scanned and formatted to anaglyph or from a digital stereo camera or a digital 2D camera on a slide bar.