thats because you've probably took only one shot and then adjusted its exposure by yourself.. so that photoshop can tell the difference between originally different exposured photos and modified ones..
its no problem to edit the tutorial really, but it has been sometime since i have prepared the tutorial and since im not able to access my home computer for a while I didnt have any chance to check the information. whatever the result is, if you are right thank you for the comment, anyways I've used the photomatix in this tutorial so does not matter.
Thank you for this tutorial. I would like to ask you why don't you use the photomatix also for the exposure blending for making the x.hdr file? Why using the Photoshop for that? Is Photoshop hdr file better?
as i wrote in the description "*generating .hdr file is possible by photomatix itself also, however i prefer photoshop, cause i think it gives a more efficient result.". however this explanation was for the date. the up to date version of photomatix gives even a better result than photoshop.. thank you for mentioning..
it looks really fine.. and thanks for you comment also.. just a little advice though, if you have more light and stronger light source the result will be better.. more light and more shadow makes it better.