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How does profiling lenses that ACR automatically adds corrections for work?

Mar 19, 2012 1:54 PM

Tags: #dng #lens_profile_creator

There are a number of lenses for cameras that apply in-camera corrections for (example, the Panasonic 14-42mm pancake zoom for micro four-thirds), from which the RAW files appear to have correction applied when I open them in ACR or lightroom.  It appears that ACR/LR is applying corrections to these lenses automatically since barreling etc appears when they are opened in some other raw convertiers.  Is there any point in creating profiles for RAW files from these lenses or is it overkill?  Or will it make things worse or better?

 

Thanks

 
Replies
  • Currently Being Moderated
    Mar 19, 2012 4:23 PM   in reply to Alan in LA

    The current version of the ALPC (1.0.2 Preview #3) builds what is called incremental lens profiles on top of the in-camera corrections. it corrects any residual geometric distortion that might have left out from the in-camera corrections. But that is not the most interesting part, in-camera correction typically only handle the geometric distortion, but not the LCA or the vignette. So you can build your lens profiles to correct those.

     

    -simon

     
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