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Strange Tamron 17-70mm vignetting

Started 8 months ago | Discussions thread
sluggy_warrior Veteran Member • Posts: 3,204
Re: Strange Tamron 17-70mm vignetting
4

fernandojval wrote:

Neither Fujifilm's software, nor Capture One, nor Darkrable, nor Affinity Photo give the double vignetting problem.

I just tested your shared RAF in darktable using the embedded metadata in EXIF vs using calibrated lensfun data. The embedded metadata from the lens is indeed incorrect, it does cause the weird ring in darktable.

FWIW, the X-T4 and X-T5 are both using the new correction format that darktable has reverse-engineered :

  • Exif.Fujifilm.GeometricDistortionParams: 19 values
  • Exif.Fujifilm.ChromaticAberrationParams: 29 values
  • Exif.Fujifilm.VignettingParams: 19 values

My X-T2 is still using the old format (23-31-23 values) which darktable doesn't know how to parse, thus, I'm using my calibrated lensfun data instead.

weird ring when using the embedded metadata

no problem with the calibrated lensfun data

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