Architecture is the crucible of HDR programs. The hard edges between light and dark areas generate halos etc. Up to this point I ALMOST ALWAYS found it better to light the site artificially rather than try and make an HDR image look decent. Don't think I didn't try. I own or have tried most if not all the HDR programs out there and largely given up in frustration.
Then came Lightroom 3 and the Enfuse Plugin. I have much testing to do, but my initial tests show great potential. The test below (bottom) is the DEFAULT settings from a 2 stop exposure bracket, straight from the DNGs in LR3. The image on the top is the unaltered "middle" exposure. Hmmmm........
Architecture by Dekker Perich Sabatini-Albuquerque, Las Vegas and Amarillo. The University of Nevada Reno Center for Molecular Medicine in Reno Nevada.
Now you might say that this could be done by boosting the Recovery and Fill Light sliders and.......yes you could and I did, but you concurrently generate pattern noise in the shadows you boost. Enfuse's method of sampling the shadows from the brightest exposure creates bright shadows with zero noise (this is typical of all the HDR programs I have tested).
This HDR'd result tries to more closely mimic the eyes experience of the scene where the eye dilates as it moves from shadowed areas to the windows. If you overdue it, bringing the window light down further, the lack of brightness in the windows seems unnatural resulting in that overdone HDR effect.