Request for Lumix lens profiles

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  • Updated 5 years ago
Hello. Has anyone created any profiles for Lumix lenses yet? I was disappointed to find nothing in LR4!

As the MFT format gains popularity then these would be most welcome.
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Nicholas Taylor

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Posted 5 years ago

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Steve Sprengel, Champion

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Lens profiles for many 4:3 cameras are built-in and always on.

You don't say what camera you have.
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Nicholas Taylor

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Sorry: I have a G5 with the kit 14-42mm lens plus a 45-200mm.

I can see no entries for Olympus nor Panasonic/Lumix in the pull-down list of Profiles, so if they are "built-in and always on" how do I make use of them?
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Steve Sprengel, Champion

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If they are "built-in and always on" then you don't have to do anything to use them, they will automatically be used all the time.

To test: shoot a RAW + JPG of a brick wall at both extremes of the lens zoom, and compare the amount of distortion of the camera JPG vs the LR version. There would typically be a bulge or a pinch in the center for regularly-spaced lines of a brick wall if there was no geometric lens correction being done.

So if you see little to no distortion in both a camera JPG and a LR-raw-version then the lens profiles are likely always on in camera and therefore always on in LR, too.

If LR shows distortions, especially if the camera JPG doesn't, then your request for a lens profile is not inappropriate.

Why doesn't Adobe just say that a lens profile is missing from the list because it is always on?

Adobe probably signed non-disclosure agreements with some camera manufacturers in exchange for help in decoding their raw files or developing lens profiles that prevent Adobe from disclosing there are lens profiles used--camera manufacturers are protective of their final image product and wouldn't want people to know how bad some of their lenses really are.

If Adobe included an indication in the lens profile area that no profiles were listed because a profile was built-in and always on for cameras that there were no NDAs with, then it would be relatively easy to verify lens profiles being in effect as I described above, and which would break the NDA of not disclosing the use of a lens profile. Adobe may be able to renegotiate new NDAs with camera manufacturers that let them tell us which lenses are always on, but until something changes, users will continue to be confused and assume there aren't lens corrections occuring when there might be.

At least that's my theory and no one from Adobe has challenged it, so I assume it to be generally correct.
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Nicholas Taylor

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Thanks for this answer.

Being new to LR (and probably a bit dim with it) I took the list at face-value and assumed that "missing from the list" meant just plain missing and not "un-necessary".

What a lot I have to learn!