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EWulf
Inspiring
May 11, 2016

P: Merge to HDR automatically applies lens correction profile to Sony ARW (RAW) file

  • May 11, 2016
  • 26 replies
  • 1332 views

I'm using Lightroom CC, Sony A7r camera, generating Sony Raw files (AWR) and my problem happens with all of my Sony lenses (all of them have lens Profile Corrections, but I have it turned off on import).
I bring the images into Lightroom without lens correction. When I send my bracketed exposures into Merge To HDR with auto align and auto tone turned off, Lightroom automatically applies the lens correction profile. This is not a problem for most of my lenses as I want them corrected EXCEPT for my Sony 16 mm fisheye converter. I don't want lightroom to correct the fisheye distortion. I talked with someone using Nikon RAW files and Lightroom does not correct their fisheye distortion (don't know about other lenes). How can I prevent Lightroom from applying profile correction to my images upon sending them to Merge to HDR? Thanks

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    ccastleb
    Adobe Employee
    ccastleb
    Adobe Employee
    May 11, 2016
    Folks, this looks like a bug. We apply Sony lens corrections by default if a profile can be located. This is per Sony request. The HDR merge should copy whatever the setting is in the sources (profile on or off) but not apply it destructively as you are seeing. Pano merge WILL apply it destructively by design. I'll log a bug internally and we will investigate.

    - Chris
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    EWulfAuthor
    Inspiring
    May 11, 2016


    Sorry, I had sent some images to Rikk, but let me put some up here. Here is a Windows screen shot of what's happening. On the right you see part of one of the selected bracketed images with fisheye distortion. The apply lens profile is not checked. On the left you see the Merge to HDR window with the auto align and auto tone turned off. The preview images has "automatically" applied the lens profile and lost the fisheye distortion.

    Here is the hdr.dng that I produced on my Windows version of Lightroom. It has lost the fisheye distortion.


    Here is a jpeg of the hdr.dng that Rikk sent me that he generated from my RAW files.. To me they look the same with loss of fisheye distortion, so I think this is a problem for both PC and MAC. This .dng was sent to me by Rikk and I loaded it into Lightroom with the lens profile correction turned off.


    Here is one of the bracketed RAW images with the lens profile turned ON. It looks just the same as the HDR from both MAC and PC.
     

    Here is one of the bracketed RAW files with no lens correction with the fisheye lens distortion I want to present.
    Thanks for any help.
    ssprengel
    ssprengel
    Inspiring
    May 11, 2016

    There are two ways lens corrections can happen with raw images. 

    The old way is that someone has computed a lens correction profile by photographing a chart and that profile is stored as a separate .lcp file somewhere in the LR resources folders and when you click Enable Profile Corrections, the profile is applied. 

    The new way, that coincides with the advent of mirrorless cameras where the camera does it's own lens corrections before producing the jpg, is that the profile is contained in the raw files, themselves, from the camera, and there is no way to turn this off.

    What sounds like is happening for you (but not Rikk) is that the new-way profile, which probably only corrects chromatic aberration but not lens distortion, is being applied to the original raw files, so they still look "fishy" (have the bulged look), but that this lens correction data is not being included in the resulting HDR and an old-way profile is being applied, perhaps instead, and for fisheye images an old-way profile does remove the fishiness by extremely stretching the corners.

    This is what I'm imagining is happening since you haven't included any screenshots and I don't have the images to play with.  The curious part is why Rikk isn't seeing the same thing happen.  Have you customized your lens profile defaults for this lens, perhaps on a different camera body?  Something seems to be different with how things are set up on your computer compared to Rikk's and it's causing an issue for you but not him.

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    EWulfAuthor
    Inspiring
    May 11, 2016

    If it is already applied to all images and the images are OK in Lightroom (except for the Merge to HDR), I don’t understand why it would cause a problem with just with Merge to HDR. The correction that is being applied “automatically” with the Merge to HDR looks identical to what happens when checking the Lens correction profile, so I still thinks it’s something with Lightroom/Sony RAW. This happens with all the Sony lenses that I have.

    ssprengel
    ssprengel
    Inspiring
    May 11, 2016

    So this profile in the original raws does not require Enable Profile Corrections to be enabled? 

    If one does Enable Profile Corrections does the correction change or is there a message about an external profile not being found?

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    EWulfAuthor
    Inspiring
    May 11, 2016
    When you bring the hdr.dng back into Lightroom the lens profile remains unchecked. If you check it you get a more extreme anti-fisheye distortion.
    Rikk Flohr_Photography
    Community Manager
    Rikk Flohr_PhotographyCommunity Manager
    Community Manager
    May 11, 2016
    Steve, The individual raw files do have an embedded profile that is being auto-applied.  If you interrogate the raw in ACR, it shows the presence of the profile.  The resultant DNG does not. 
    Rikk Flohr: Adobe Photography Org
    ssprengel
    ssprengel
    Inspiring
    May 11, 2016
    Rikk, is the lens/camera combo one that uses built-in lens corrections or do the lens corrections only occur after you've checked Enable Profile Corrections?
    ssprengel
    ssprengel
    Inspiring
    May 11, 2016

    Yes, but are the lens corrections that are being added (somehow) also removable after the HDR is created?

    In other words, once the resulting HDR is back in LR, can you uncheck the Enable Profile Corrections and have things back to how you want ? 

    Rikk Flohr_Photography
    Community Manager
    Rikk Flohr_PhotographyCommunity Manager
    Community Manager
    May 11, 2016
    Eric,

    I got your files and imported them into a 6.5.1 catalog. I made certain that Lens Corrections Profile Correction was turned off for all three images. Sent them to Photo Merge>HDR with AutoAlign and AutoTone turned off. The resulting HDR DNG does not have a Profile auto-applied. 

    On this Mac (El Capitan) it is working as expected.  What is your OS?
    Rikk Flohr: Adobe Photography Org
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