I am using the photomatix plug-in to CS3. The workflow is the following. (1) merge to HDR in CS3 (2) convert to 16-bit image with no tone-mapping in CS3 and (3) use the Photomatix plug-in to tone-map the image. The problem area seems to be highlights. Some of them are still overexposed even though all of the data has been captured in one of the exposures. Also, when tone-mapping these highlights, tiny but noticeable red and green artifacts populate the brighter areas (not necessarily just the areas blown out). Any help here? For shooting I am metering for the entire scene using the matrix metering mode on my Nikon D70 and then bracketing +/- 2 stops. Thanks in advance!