Lens Distortion Correction Documentation?

I have seen in some discussions that LR corrects lens distortion for some lenses and some cameras. I have not been able to find documentation that indicates what cameras and lenses are supported for this - either for LR2.3 or 3.0beta. Is that documentation available somewhere?
Thanks!
David

Well, I guess that would be why I couldn't find it. ;-)
I'll try a more specific question. Are any DSLRs supported by the distortion correction? Specifically, I'm interested in a Canon EOS 5D, and what lenses (if any) Adobe has profiled for distortion with this camera.
I am hopeful that when LR3 comes out of beta, it will have distortion correction for most or all supported cameras and lenses, and that at least some of the specifics will be documented.
Thanks!
dbr

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Digital Camera RAW Update 5.02 breaks Sony RX100 lens distortion correction (AGAIN!)

Just like with the Digital Camera RAW Update 4.08, the latest 5.02 update breaks the Sony RX100 lens distortion correction again. I'm reverted back to 5.01 until this is fixed.
From your Time Machine backup, restore the previous versions of
/System/Library/CoreServices/RawCamera.bundle
/System/Library/CoreServices/RawCameraSupport.bundle

Yes, I noticed it too, but I wasn't certain it was 5.02 that did it as I sold my RX100 and haven't processes any files for a while. Then as part of the NR discussion here I looked at some old RX100 files, and the distortion correction now disappears. Unfortunately I can't really revert to 5.01 because I was waiting on the A7 support 5.02 brought.
Apple are aware of it, so hopefully the fix will be quick to arrive.
Andy

Perspective/lens distortion correction

About the only thing I ever have to go out of LR2 to do is correct for perspective or for lens distortions (esp. on wide angle lenses). I know this might not be an easy thing to fit in the interface, but it'd be very useful. Especially if you can set it up to do a stored lens distortion correction for a given lens at a given focal lens (+ maybe focus distance).
-Lars

I hope y'all don't mind if I think aloud a little more here.
We've been talking about perspective correction and lens distortion correction as if they were just about the same. They aren't.
Lens distortion correction is a fairly complex warp, but one that is completely determined by the lens and focal length (please corect me if I'm wrong). The main use of it would be to correct for the lens defects, not to create an artistic effect (like CA repair). It could therefore very reasonably be done as a preparation step, as with the Olympus cameras that actually store some correction information. It would be of relatively low user value to be able to change it later, and it would be much harder to implement.
Perspective correction is most definitely a user-driven correction. Not only does LR not stand a chance of figuring out what to do automatically, there would also be many cases where you'd want to correct in one dimension but not another, correct somewhat less that 100%, or in other ways fiddle with the amount of correction. Fortunately, it is a much simpler correction, merely the application of a small transformative matrix. Unlike lens distortion correction, it doesn't turn circles into strange wobbly shapes, but merely into ovals.
Let's take a look at the local adjustments: Crop, rotate, red-eye, spot removal, graduated filter and adjustment brush.
Crop would be well-nigh impossible to mix in with lens distortion correction, another reason to have the correction applied first. With regards to perspective, it should behave more or less like it does towards rotation.
Rotation can actually be done internally using the same operations that perspective correction would, but should probably still be separate in the interface.
Red-eye and spot removal both operate on horizontal-vertical ovals (restricted ovals for spot removal). These would be awful with user-adjusted lens distortion correction, even more reason to have that be an initial step. Perspective correction would stretch them somewhat. What happens when the user makes a dust spot fix, then fixes the perspective, then attempts to adjust the dust spot fix? We end up with the same situation as with vignetting: That there are pre- and post-crop versions. This distinction would now have to extend to pre- and post- crop+rotate+perspective adjustments. Obviously, you'd also want to be able to spot remove based on the corrected image, and it'd be strange to have a tool that's bent. It may be necessary to separate out dust spot removal from "subject matter removal" (including red-eye), as dust spotting should always be before perspective correction.
Graduated filter was really the thing that convinced me that the two corrections need to be split. Applying lens distortion correction after graduated filter would lead to a bent 'horizon line', a very bad thing indeed. Fortunately, it would be fairly resistant to perspective correction, though not entirely: If the horizon does not follow the perspective correction axis, the outer lines ought to tilt together. Probably overkill, though.
We already have an example of a similar situation: Red-eye removal and rotating. Try making a red-eye correction, then rotating the picture sharply. The red-eye oval will stay in the same position, even though that moves it from where it was supposed to be. I guess graduated filters could behave similarly.
The adjustment brushes are probably the simplest: Since they're already amorphous shapes, they can "simply" be bent and distorted along with the corrections and still make as much sense afterwards. Except if you want to use them to correct lens errors, but I don't know how often you'd want to do that.
Perhaps distortion correction and pre-crop vignetting should belong together. They would certainly interact.
That's my $0.02 plus inflation.
-Lars

Lens Distortion correction not working on tonemapped jpg files

I have a series of photos exported from Lightroom 2 that I HDR tonemapped in Photomatix. Unfortunately after a disk failure I do not have the original RAW files and only have the 100% jpg saved tonemapped files from photomatix.
Now that Lightroom 3 is out I wanted to try some lens distortion correction on them. I imported them and immediately noticed after enabling the lens profile corrections and choosing my lens that although chromatic arberration and vignetting works there is no effect at all with the distortion correction! Even when I slide the slider from one side to the other absolutely nothing changes.
I tried it on other raw files and it works fines. I tried it on jpgs that I have that have not been combined and tonemapped in photomatix and they work fine. It is only the jpgs created from photomatix.
Is there something about the exif data that I am not considering or any other explanation as to why the photomatix jpgs won't take any distortion correction? thanks

If it's working for other jpg's, (and I though it didn't work on jpgs, so who knows?) then it does sound like the photomatrix program is wiping out the exif information that is needed.
Did you try using a viewer to look at the exif info, both before and after, to compare? Maybe there is a setting (in photomatrix) that you are missing when you save data?
Sorry, don't know photomatrix, so just offering generic ideas in the hopes it sheds light..
Cheers!

Lens distortion corrections in Camera Raw?

Chromatic aberration, lens vignetting, post crop vignetting
are possible in Camera Raw.
Why not have access to lens distortion corrections in CR?

Maybe show us a screenshot of what you see on the system that isn't want you expect. What version of ACR are you using in each? It should be visible in the title bar of the ACR plug-in if you unmaximize it, or you can do About Plug-ins / Camera Raw in PS.
Here is the Manual tab of ACR 6.7 on Windows in CS5:

Lens distortion correction in Premiere CS6?

I'm trying to correct the distortion caused by a wide-angle lens in Premiere CS6. From what I can tell, there is no filter or transform / distort feature within Premiere itself. I followed the steps in this tutorial to open the MPEG4 in Photoshop, apply the lens correction filter, and then export the video again to be re-imported to Premiere. http://podcasts.creativecow.net/adobe-premiere-tutorials-podcast/correcting-lens-distortio n
However this tutorial is for CS5. I am seeing no adjustment or filter layer in my layers panel, as it appears in the tutorial. When I go to export the video, it seems the Adaptive Wide Angle filter or the Lens Correction filter has only applied to a single frame of the whole clip. Bummer.
Any other suggestions for fixing lens distortion in Premiere?
Thanks!

Both these replies are a bit rude and unhelpful. I am editing in Premiere, and I am not very familiar with it. The question is about how to fix lens distortion in Premiere. Maybe there's a way to do this that I'm not aware of...? That's why I asked the question! There's nothing about it that I could find in the forums. The only fix I found didn't work—which was to use Photoshop *integrated with Premiere*. And two people tell me to use AEFX without pointing me in any directions of how to do that. Useless.
Anyway, I found some information that *was* helpful. This tutorial demonstrates that one critical step was missing from the prior tutorial, which is to convert the video layer to a smart object before applying the effect:
http://www.protechreviewgroup.com/tutorialsinformation/tutorial-fisheye-correction-in-phot oshop-for-gopro-hero-hd/
The same person provided a tutorial on how to do this in AEFX:
http://www.protechreviewgroup.com/tutorialsinformation/tutorial-fisheye-lens-correction-in -after-effects-for-gopro-hero-hd/
Now that these steps are taken, I have to take the footage back into Premiere. It's a workflow question. Other video editing software has this kind of stuff built-in to the effects panel.

Lens distortion correction

I would like to know if there is way to correct a lens distortion (Barrel Distortion) inside Lightroom. If not, how can I do it.
ex. Nikon D70 lens 18-70mm

And this is really a thread for the main forum. This is Feature Requests, and this one is already in.
Don

I've done spot healing in my images but want to change lens distortion corrections. Does it matter?

- I originally corrected all the lens distortion in my images with the default Adobe lens profile for the lens, and also done all the spot healing too. However, I now want to change the lens distortion profile to a profile that i've made instead. The Adobe default lens profile and the one that i have made give different distortion corrections (Adobe's is a bit too strong).
- Will all the spots chosen in the spot healing still be mapped correctly? i.e will the source points for the spot healing and the area i'm sampling from still be in the correct positions after adjusting for the new lens distortion?
- Does Lightroom allow for this, or do i have to re-do all the spot healing?

Hey Paul,
Well, you could just try it to find out . But the answer is: Adobe adjusts spots (and paint, and red-eye...) to accomodate lens corrections. It's one of the reasons it is recommended to leave lens corrections until last if your Lightroom is performance challenged, i.e. it takes some horsepower.. (me? I like having lens corrections done up front, despite the performance hit).
Rob

Can't see the grid lines in the crop lens distortion correction overlays!!!!!!!!

Does any one knows how to fix this?

In Lens correction, the grid only shows while the mouse is at the distortion slider (in Profile) or one of the Transform sliders (in Manual).
Beat

Lens/distortion correction updates?

I haven't been able to find any reference to how new profiles for lens corrections will be updated in the new Lightroom, anyone have any insight?

My understanding from comments on the Lens Creator forum is that new profiles will be made available as part of the Lightroom and Camera Raw dot releases that ship every 3 or 4 months. These normally include new support for new cameras.

Can I use Canon DPP as the external editor in Aperture 3 so I can use the lens distortion correction?

I'd like to use Aperture as my standard RAW converter and export to DPP if necessary. Has anyone tried it?

No, I don't believe so. DPP is a RAW converter, like Aperture, and you usually can't mix and match those.

Lens Distortion for 18-105 Nikkor increases in ACR 6.4 beta

The lens distortion correction on an AFS DX Nikkor 18-105mm seems to INCREASE Barreling instead of decreasing it. To get rid of the barreling I have to cut back on the Distortion correction. Anybody else experiencing this?

What you say about overall usability is true (and unfortunate; all my film camera lenses, no matter how humble, had full control of all pertinent information), but I was referring to the corrections only.
So far as software is concerned, it won't perfectly make a silk purse ... but it comes damn close! Years ago, I did lens testing, for oscilloscope cameras, and the rigor even for that was very demanding. What I know about the conditions necessary for obtaining repeatable results during such testing cannot change unless you are willing to accept less than optimum results. The penchant to "Let software correct it" has some painful connotations!
Of course, the major source should be the lens makers themselves, but I fear this is a pretty guarded secret. No one wants to admit their failings, and because of the software correction capability, I suspect that certain parameters are of less concern at the lens tradeoff level. But Nikon or Canon isn't likely to tell you that!

Raw Update 4.08 removes distortion correction for Sony RX100 files?

I loaded raw update 4.08 on my 27 inch iMac yesterday. A while later, I opened Aperture 3 to export some RX100 files from a family event last week to Smugmug. To my horror, as the photos loaded when I viewed them, the automatically applied lens distortion correction was removed and obviously it was worst with the wide ones. The issue also shows up in iPhoto, so it seems a general OS thing. To confirm it was indeed due to the raw update, I exported the same raw files to my MacBook Air, which I hadn't updated yet. Sure enough, Aperture loaded them with distortion correction just fine. Obviously, I won't be updating the MacBook until this issue is fixed.

TBannor wrote:
I loaded raw update 4.08 on my 27 inch iMac yesterday. A while later, I opened Aperture 3 to export some RX100 files from a family event last week to Smugmug. To my horror, as the photos loaded when I viewed them, the automatically applied lens distortion correction was removed and obviously it was worst with the wide ones. The issue also shows up in iPhoto, so it seems a general OS thing. To confirm it was indeed due to the raw update, I exported the same raw files to my MacBook Air, which I hadn't updated yet. Sure enough, Aperture loaded them with distortion correction just fine. Obviously, I won't be updating the MacBook until this issue is fixed.
This may be disappointing, but it is expected. Note that Aperture has removed nothing, however. What you are seeing is caused by using a RAW Original instead of a JPG Original.
The Apple RAW Compatibility Update is part of the OS. The RAW converter in OS X is system wide. Any program can use it. Aperture uses it.
Aperture does not, afaik, do _any_ lens correction. Lens correction must be handled by a plug-in or external editor (or done outside of Aperture).
The files you had imported and viewed prior to the most recent RAW Compatibility Update were JPGs. They were converted in-camera. The camera contains the software to correct for lens distortion when it converts the sensor data to a JPG file. Now that you can view the converted RAW files, you can see that this distortion correction is not applied. That makes sense: Aperture is doing the conversion, not your Sony camera.
So there is no issue to be fixed. If you want to use Sony's lens corrections, you have to either use the JPGs created by the camera, or convert the RAW using Sony's RAW converter (Image Data Converter v. 4). Other software may also apply lens distortioin correction (I don't know). Aperture does not.
This is a much-asked-for feature request. If you would like to see it added to Aperture, tell Apple. The only line they listen to is "Aperture➞Provide Aperture Feedback". It certainly wouldn't hurt to add your voice.
HTH.
--Kirby.

Does Aperture Correct Lens Distortion with Panasonic Raw Files?

I have a Panasonic GF1. When shooting in JPEG I know that the camera adjust for barrel distortion on the saved image. However It does not for RAW images as far as I know.
I am aware that Adobe reluctantly added the software correction to Adobe Camera Raw for Panasonic cameras that need this for their RAW files to look correct, even though technically the file is no longer RAW after this adjustment. The information needed to do these corrections is encoded in the RAW file. So! I am wondering if Aperture does this correction to imported RAW files now that it supports The GF1?
Heres a more in depth look at the distortion issue: http://www.dpreview.com/reviews/PanasonicGF1/page19.asp

As a DMC-G1 owner, I thought that RAW conversions were fully supported now. Turns out that my perception seems to have been only partly true.
I fired up SilkyPix again (thought I'd seen that for the last time!) and checked what corrections it offers. In the 'Lens aberration controller', there are three controls: Shading (angle and amount), Distortion (distortion rate and centre) and Chromatic Aberration (R rate and B rate).
Aperture only exposes controls for the [Chromatic Aberration|http://documentation.apple.com/en/aperture/usermanual/index.html#cha pter=17%26section=11|Working with the Chromatic Aberration Controls] (red/cyan and blue/yellow) - this can be applied globally or brushed in selectively.
There doesn't appear to be any access to shading or distortion as there is in SiklyPix, though - at a quick glance and I could be wrong - Aperture's [Devignette|http://documentation.apple.com/en/aperture/usermanual/index.html#ch apter=17%26section=4|Working with the Devignette Controls] tool appears to provide a similar function to the description of the Shading tool in SiklyPix.
If there's distortion correction automatically going on behind the scenes - you did mention the embedded correction information in the RAW file - then it's not obvious. There's certainly no user control that I have seen.
Hope this helps...
Regards,
Gary

How to disable distortion correction for micro 4/3 lens

Hello,
I have an Olympus E-P2 and Panasonic 14-45mm lens. Adobe Lightroom 3 and Photoshop CS5 appear to be performing some very heavy-handed distortion correction at the wide-end of the zoom (running the file through a different raw converter yields dramatically different results at the edges). This is without selecting any lens profile or enabling manual correction. How can I disable this?
Thanks,
Dara
P.S. Strangely, ACR 6 is not doing any correction of chromatic aberration. Given that the system is set up to try and fix distortion and vignetting automatically, it would make a lot of sense to fix CA too.

That's a solution. It doesn't however answer my question. Clearly there is some metadata tag that tells ACR what corrections to apply. Using EXIFTool, I can replace all the metadata with that from a shot with a non-correctable lens. Unfortunately, this screws up my cataloguing by replacing other things like focal length, aperture and so on. It would be nice to know the exact tag. Thanks.

Lens Distortion Correction Documentation?

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