I'm happy to experiment if you put the files somewhere I can reach them.Thanks for trying that out Rob! I have a series of three bracketed exposure with the LCC file as the last file. When I select all three I get a message that it is Flat-Field Correcting 4 photos but only one of them is converted to a DNG file and visually it doesn't look like any correction has been applied.
Here is a screenshot of the settings:
View attachment 177322
Just in case Lightroom saves some sort of cache that remembers a past process, I deleted all the files and re-uploaded them from the camera card. I also created a set of .3fr and .fff files to see if that could be making a difference. Both ways didn't work.
The next thing I tried was to export the .fff to .tiff files (within Lightroom) and then ran the correction and it worked. For some reason it is having difficulties with the Hasselblad filetypes. Maybe?
Curious if you would be able to get the flat field correction to work with the raw files.
Going to see if it works when exporting DNG files…results soon
However, my first guess would be that Lightroom needs you to break the process up into two steps:
2. Flat field correction
You could do it two ways:
1. HDR the three uncorrected files, and then Flat Field the result
2. Flat field each of the three uncorrected files independently, and then HDR them
The first approach is definitely faster!
Also, I hear you re the pain of having to shoot an LCC! I would dearly love to have something in the 45mm focal length on my outfit, and my calculations suggest I could just barely make an Apo-Digitar 47/5.6 work, but on my GFX 50R sensor I'd have to do colour correction for every shot, which is such a pain.