I have now updated and improved the page of my web site which allows to fuse online two differently exposed pictures: http://www.milanofotografo.it/englishFotografiaHDR.aspx
. In particular there is now a new gradient shape, expecially useful with images containing bright low contrast parts.
In this way it is possible to get correctly exposed pictures of scenes which otherwise would result partially eighter too dark or burnt.
The page offers also the possibility to correct horizontal and vertical shifts, so to make it possible to apply the algorythm also on pictures shot with the camera handheld.
There is also a help page.
Critiques and suggestions are welcome!
Note: If the images are larger than 12 Mp each, there could be an error!
The image below (Decorations on the voult of the apse of the Chartreuse of Garegnano) was obtained using the algorythm contained in the page.