I have already written about the in-camera distortion correction of the Samsung NX. Although there are some NX lenses (e.g. NX 16/2.4, 20/2.8) that always have distortion correction turned on in the camera settings, this distortion correction doesn't affect SRW files anyway.
However, some people think otherwise because they use raw development software that does not allow full control over distortion correction (made by Adobe and so on).
So I would like to demonstrate ART raw development software. Unlike the software mentioned above, ART doesn't deny control over the profiled lens correction.
I used the Samsung NX 20/2.8 on two cameras. The in-camera distortion correction cannot be turned off with these lenses.
1. Samsung NX10
In-camera JPEG:
SRW without profiled lens correction:
SRW with profiled lens correction:
2. Samsung NX2000
In-camera JPEG:
SRW without ART's profiled lens correction:
SRW with ART's profiled lens correction:
It is obvious that the images without profiled lens correction have visible distortion. The images with profiled lens correction look like the in-camera JPEGs (in terms of distortion), but these images have a wider angle of view. This is another reason to use SRW instead of JPEG.
3. And the Samsung NX 16/2.4 with the Samsung NX500 (taken from my archive).
SRW without profiled lens correction:
SRW with profiled lens correction:
Unfortunately there is no in-camera JPEG to compare, but the distortion control is still visible.
Also note that the Samsung NX cameras actually have in-camera vignetting correction that affects SRW files.
See also related notes:
- RawTherapee (2022) и ART (2022-03-30)
- Samsung NX10, NX20, NX300M: внутрикамерное исправление виньетирования (2014-10-01)
- Немного про дисторсию (Samsung NX20, 16/2.4, 20/2.8, 30/2) (2013-04-19)
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