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Strange Tamron 17-70mm vignetting

Started 7 months ago | Discussions thread
sluggy_warrior Veteran Member • Posts: 3,200
Re: Strange Tamron 17-70mm vignetting
2

fernandojval wrote:

Has anyone taken test shots with the Tamron 17-70mm f2.8 for Fuii and processed them with Adobe software?

Here's my vignetting calibration shot at 17mm/2.8, if you want to see if both my lens and yours have the same problem:

https://drive.google.com/file/d/1-ytthPwITTtUKO2iwvSCz_raUOvocfJu/

If Adobe software is reading the correction profile directly from EXIF, then either it's reading it wrong, or the lens is giving the wrong data.

Here's the SOOC Preview extracted from the RAF's EXIF, both distortion and vignetting looks good, so at least the lens relayed the correct profile to the camera (thus, unlikely to write the wrong info to EXIF?).

SOOC Preview extracted from EXIF

darktable/lensfun doesn't have correction profile for this lens yet, so I had to calibrate one myself:

https://www.dpreview.com/forums/thread/4665938

Here's your shot without and with distortion+vignetting correction in darktable (using my own calibration):

from darktable, with no lens correction

from darktable, with distortion + vignetting correction

My distortion correction is still slightly off in the middle comparing to SOOC. I'll have to calibrate again soon. Better yet, I should adapt the new script to extract the correction data directly from the EXIF:

https://github.com/lensfun/lensfun/discussions/1606

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