OK - Now it works after I used camera raw to convert all the .dng files to .tif files. But why do I have to do that? For a large HDR/focus-stack set that means converting hundreds of files.

I downloaded the latest HC version, and the output still looks identical.

Forgot to point out, the source files are .dng and the output files are .tiff because they will be further processed.

Thanks

Thanks in advance for any insights. This weekend a did a series of focus-stacked HDRs. My plan was to focus-stack first, then take the resulting stacks and do HDR merges. The span between the shortest and longest exposures was 4 stops.

In an older version of Helicon Soft, v4.2.8, I manually loaded ...