I recently purchased the new Sigma 24-105mm f4 ‘art’ lens for my Nikon D800E (the Nikon F mount version just began shipping here in Germany). Lightroom has, as yet, no lens profile for this lens. However, several days ago Adobe released their latest ACR update (version 8.4 RC) which, among other things, includes a lens profile for the Sigma lens. Until Lightroom releases their next update which, I assume, will also include the new Sigma lens profile, I thought a possible workaround could be as follows: import into LR (default procedure), open the photos in ACR (via Bridge), apply the lens profile, and then save the files back to their original folder as 16-bit DNG’s (ProPhoto RGB working space). Then all I would need to do is synchronize the folder in LR and import the new DNG’s. The problem is, it’s not working! Though the profiles are definitely being applied in ACR, after importing the DNG’s back into LR, they remain unaltered (no profile applied!). However, if I save those same photos in ACR as 16-bit TIFF’s, the lens profiles survive the re-import into LR perfectly! Obviously, there is something concerning DNG’s and their relationship to ACR and LR which I unfortunately do not understand! What’s happening here? I’d really appreciate help with this. If possible, I would infinitely prefer to work with DNG’s because the files are so much smaller than their corresponding TIFF’s.
Many thanks in advance,
Larry