Ok what I’m seeing with the sample image you linked to might agree with some of what you’re saying:Īll of the X100S conversions on the page that contains the one image you linked, below, including those from the camera, from ACR, from DCRAW and something else I am unsure of, seem to have a small amount of geometric pincushion distortion, at least looking at the red rectangle near the outside of the test images. It's probably easier and quicker to test than typing it here! The key is to use an evenly lit 2D subject with nice straight lines. If they both look the same but the lines show bowing then neither image has distortion lens corrections applied, etc. With a subject like a brickwall it will be very obvious if either file has distortion. If they both show "falloff" then neither is corrected.įor distortion simply A/B between the JPEG and raw image in LR. If the corner areas of the raw file are different than the JPEG then LR is not applying corrections, but the in-camera JPEG is corrected. Use the White Balance eydropper to sample the RGB levels in each image corner and then the center of the image. Adjust the Exposure setting as required so that the central area of both images is identical. Open both images in LR and adjust the raw image using the Basic controls to match the JPEG image in tonality as close as possible. Make sure the camera is perpendicular to the subject so that there is no convergence (horizontal and vertical lines parallel to the viewfinder frame)
Use maximum aperture and widest zoom setting, which is probably worst case for both vignetting and distortion.
Shoot a large "evenly lit" 2D subject with linear detail, such as a brickwall. It should be easy to check if LR is applying any lens corrections by comparing the JPEG and raw images inside LR: Both of which can be manually enabled or disabled. The only way I'm aware of that LR can apply lens corrections is with the Profile and Color panels in the Develop module. What a difference one-letter makes! At least we know the available Adobe lens profile works fine with the predecessor X100 raw files. With a better example X100S raw, maybe shot at F/8 as the X100 sample is, it would be easier to see a difference between the raw-digger and LR conversions. My guess would be that Adobe does what the camera does, and if there is no way to turn off the lens corrections in the camera then Adobe has them automatically enabled all the time, like they do with many other point-and-shoot and mirrorless cameras, nowadays. My analysis, above, comparing the RawDigger (dcraw) raw conversion which shows a slight darkening in the corners and the LR conversion which does not, is that vignetting is being corrected by LR automatically, but there is so little geometric distortion in the test raw I found that I can’t tell one way or the other about that correction.
These statements make sense about the X100 which has a lens profile in LR that can be turned on and off, but we’re talking about the X100S, not the X100, and there is no X100S lens profile to turn on and off so one cannot tell whether LR is always or never correcting the distortion by using LR, alone.
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