Help please... DNG converter not appying lens profiles ?

One of the lenses I use is relatively new and neither LR4 nor Photo Ninja have a profile for it.

I downloaded the latest DNG converter (8.6) from Adobe and it does have the profile in the profiles directory. I am able to copy it to LR profiles directory & apply it from there.

However, it seems that the profile is not being applied when using DNG converter itself, and I can't find a way to do this.

I also can't seem to find a way to export several photos from LR as DNG with profile applied.

Any help ?

LR produces "raw" DNGs with adjustment information embedded in them. That is, the DNG is not demosaicked, so the lens profile adjustments are not "burned in" to the DNG. It is similar to an XMP sidecar file embedded in the DNG you export. If you open the DNG in ACR or LR, the lens profile will be applied, if that is how the DNG was exported, but it will be applied by ACR/LR following the embedded instructions - if you open the DNG in another application (non-Adobe, for example) that does not understand the instructions to apply the lens profile info, you won't get any correction.

You can "burn in" the lens profile correction by creating a linear (demosaicked) DNG - you can do this in ACR, in the Save dialog (see screenshot). You cannot do this in LR as far as I know.

If you need to export files from LR with the lens correction applied, export as 16bit TIFFs or PSDs.

The latest version of DXO Optics Pro supports a DXO>LR workflow by exporting DNGs to LR that are linear (demosaicked) - this way the optical corrections applied in DXO get preserved in the exported DNG.

kirk

Thanks, so basically neither DNG converter nor LR would export a DNG file with lens correction that can be understood by other RAW converters ?

It appears you are correct. Adobe DNG converter provides no way of enabling lens profile correction. I do not use LR frequently, so I will defer to the LR experts here. The lens profile correction is an Adobe-based profile correction, so it will not be "understood" by any other products unless they specifically understand Adobe .lcp files (like Iridient Developer).

The idea is that your DNG remains as raw as possible.

kirk