On 25/05/2015 13:53, Roman Lebedev wrote:
> On Mon, May 25, 2015 at 2:46 PM, Mark Himsley <[email protected]
> <mailto:[email protected]>> wrote:
> 
>     Hi,
> Hi. 

Hi Roman,

>     I have the kit Sony 16-50mm zoom lens on an ILCE-6000. The lens has
>     considerable distortion so I have Darktable 1.6.6 apply lens correction
>     and denoise to the RAW files.
> 
> Apply via preset/style?

Preset.

>     The denoise filter knows the ISO from the exif and applies the right
>     profile or denoise filter.
> 
>     The lens correction always applies the correction for 16mm. It does not
>     appear to read the EXIF.
> 
> There is a limitation on how presets for Lens IOP work: if default
> values do not 
> suit you, and you change *anything* and then create preset/style,
> that preset/style will not auto-adapt to each image focal/F/d.

I assume you are right. I deleted the preset and recreated it being sure
not to touch any control. I then deleted all of the xmp files, removed
all the files from Darktable, and reimported them.

The lens correction is now, err, correct.

BTW, what does IOP stand for?

I think it's such a shame I could not just 'change history' - change the
focal length in the auto applied lens correction preset, because I'd
made some other corrections to images before I noticed the incorrect
lens correction. So I had to throw away my work. I think Darktable would
be better suited to having effect layers rather than time based history.
Anyway - that's off topic.

Thanks for your help, Roman.

-- 
Mark

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