On 2/8/2016 9:58 PM, Jim Nichols wrote:
If I may join this thread, I must admit that I learned something new (to me) today. I have noticed that, starting
with a RAW file, I sometimes get some barrel distortion when capturing horizontal lines with the X-E1 and 35/2 lens.
When I look at the camera-produced JPG, most of the distortion is missing. I concluded from this that the lens
corrections are missing from the RAW files.
Is this correct?
Yep, it's a RAW file, and thus not processed to correct the linear distortion, or anything else. The information to make
the corrections is in the RAW file. The RAW converter makes the correction as part of the conversion from RAW to general
purpose formats.
In the case of µ4/3 RAW files, Oly Viewer 3 and ACR/LR automatically make the corrections, and in fact, that can't be
turned off. So their outputs exactly match the JPEGs that were corrected in camera. DxO Optics Pro doesn't use the
manufacturers' settings, but uses their own, from their own testing, and one may turn correction on and off. In limited
testing, their corrections were better than the defaults in ACR.
I know exactly nothing about Fuji RAW files and conversion, but there is undoubtedly a way to make distortion correction
a part of the conversion process.
Straight Lines Moose
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