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Question

Fuji X100s Lens Corrections in LR5

Forum|Forum|12 years ago
September 3, 2013
3 replies
19710 views

I keep hearing conflicting reports about how Lightroom handles lens corrections for the Fuji X100s. Some say you need to use the X100 profile while others say that Lightroom applies the corrections automatically, behind the scenes, based on info embedded in the raw file itself and that selecting the X100 profile would only "double up" on the corrections. Others have said that there is no X100s profile yet but NOT to use the X100 profile because it might make things worse since the sensor has changed and the new X-Trans sensor and lens combination would likely need different corrections than the old one.

Some clarification would be really appreciated.

This topic has been closed for replies.

C

cannikin

Participant

Have there been any updates on this matter? I've got an X100T and similar to the posts above, I don't know if the corrections are being applied automatically or not. If so, and I turn on "Enable Profile Corrections" then presumably I'm doubling-up on my corrections. I'll have to try the white-wall and repeating-pattern experiments to see if I can visually make out any distortion after a plain vanilla import. But if someone's already figured out the answer then you could save me some trouble.

I'm on Lightroom 5.7.1.

ssprengel

Inspiring

Open your images in something like RawTherapee which doesn’t apply any lens corrections and see if the distortion is different than what you see in LR.

http://www.rawtherapee.com/

DdeGannes

Community Expert

This camera has a fixed prime lens 35mm. If the camera manufacturer is not making lens correction in producing the jpeg then it is so by design. There should be little if any correction necessary.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.0.1, PS 27.0; ) Camera Oly OM-D E-M1.

ssprengel

Inspiring

If you have an X100s camera, yourself, you should be able to confirm whether LR is doing its own corrections behind the scenes:

Take a raw and a jpg of a regular pattern like bricks or graph-paper, and then look to see if the raw looks similarly corrected compared with the camera JPG assuming corrections are turned on in the camera.

Do the same pair of shots of a blank, light-colored, evenly-lit wall and see if the vignetting correction is applied to both the raw and the jpg. Wide-angle probably would show more vignetting than zoomed in.

Currently, with the profiles that installed with LR 5.2 RC, there is an X100 lens profile for but no a profile with X100s in its filename.

P

PhotographyFanAuthor

Participating Frequently

I have done this and initially concluded that Lightroom was doing corrections behind the scenes because the raw and jpeg looked the same distortion-wise but then was told by someone on another forum that the out of camera jpegs do not have any corrections applied to them.

So, it would be really nice to hear what Adobe has to say about it.

P

PhotographyFanAuthor

Participating Frequently

I downloaded the X100ShVFAB.JPG and X100ShVFAB.RAF images from the link ssprengel provided. I also created a TIFF image using RawDigger as the raw converter. The image size from RawDigger is 4926 x 3296, requiring cropping in PS to the actual viewable image size of 4896 x 3264. I could see no difference in distortion between the RAF, JPEG, or RawDigger TIFF, which indicates LR is NOT automatically applying distortion lens correction.

(Click on image to see full-size)

1) Applying the LR X100 lens profile with default 100 Distortion setting removes the small amount of visible distortion in the RAF raw test chart image. In my opinion the distortion observed in the X100s chart image is very low and probably not visible in most subjects. The test chart was obviously shot at fairly close distance, which for most lenses increases geometric distortion. With the lens focused at or near infinity the distortion will probably be even lower. Applying the X100 lens profile to these image may in fact increase distortion.

2) Viewing the images at 1:1 view chromatic aberrations are corrected in both the RAF raw file and JPEG file, but not in the RawDigger TIFF. LR is "automatically" applying chromatic aberration correction with the 'Remove Chromatic Aberration' option unchecked (i.e. automatically). The X100s JPEG apparently has chromatic aberration correction applied in-camera, same as the X100's JPEG.

3) Both the X100s RAF raw file and JPEG have vignetting correction applied when compared to the RawDigger TIFF. No additional vignetting correction is needed.

SUGGESTION to the OP:

1) LR's 'Remove Chromatic Aberration' tool under Lens Corrections> Color is not required. You can leave it unchecked. You may however need to use the 'Defringe' tool when other types of chromatic aberration are present in the image file.

2) You can apply the X100 lens profile to specific raw images (i.e. close-up shots that show the distortion) without Vignetting being applied. The best easiest way to do this is by changing the X100 lens profile defaults. Select an X100S RAF file, check 'Enable Profile Corrections,' select the X100 profile, move the Vignetting slider to '0,' and go to 'Setup' and select 'Save New Lens Profile Defaults.' You can then apply the lens profile as needed to specific images that have visible distortion. It may also be helpful if you use the Fujifilm wide-angle adapter, but it may also require its own lens profile.

SUGGESTION to Adobe's Eric Chan:

From the limited Fujifilm X100s image samples reviewed it appears Adobe has done a very good job of applying the in-camera JPEG corrections to the RAF raw image conversion. It would be extremely helpful if Adobe would list the supported camera lenses that use "automatic" lens corrections, including what is applied. I suggest adding this to the 'Lens Profile Support' list (and other places?):

http://helpx.adobe.com/x-productkb/multi/lens-profile-support-lightroom-4.html

Thank You,

Todd Shaner

trshaner:

Thanks for your post. I just did the comparison myself with Raw Digger and Lightroom. It's interesting that Eric says that Lightroom is doing some distortion correction on X100s raws because I can't see it in comparison to the Raw Digger output.

I like the suggestion of modifying the correction profile sans vignetting correction for use when I definitely want less distortion.

I'd still like to hear what Eric has to say about our findings. Hopefully he will check back to see how this thread is progressing.

And I agree that the list of supported hardware would be much better if it listed what specifically was being corrected, similar to what DXO does on their site (which is very extensive and goes far beyond lens corrections).

Thanks again.

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