Ohanaware has released HDRtist Pro 1.0 (http://www.ohanaware.com/hdrtistpro/) for Mac OS X 10.5 running on an Intel Mac. It costs US$29.95.
HDRtist Pro is the more advanced version of Ohanaware’s freeware HDRtist. It’s been designed to provide more creativity with HDR images, while maintaing an easy-to-use interface, according to the folks at Ohanaware. Utilizing Apple technology, HDRtist Pro is able to wield and manipulate 128-bit floating-point images (that’s 16,843,009 times more precision than a JPEG photo).
The app’s engine has been designed to work with multiple exposures, single RAW images, and can make single JPEG images look like HDR. One-click styles, editable HDRs, and a “drop-N-click” system are all featured in HDRtist Pro.