Just to clarify as a Pentax owner I can clarify - lens correction only
applies to the JPEG not the RAW.
Sometimes I shoot RAW+ with lens correction on just so I can compare how
good the profile is vs the manufacturer correction on the jpeg.
With Pentax RAW is RAW.
On 15 January 2018 at 13:40, DeeMo Design <cont...@deemo.co.uk> wrote:
> Just to clarify as a Pentax owner I can clarify - lens correction only
> applies to the JPEG not the RAW.
>
> Sometimes I shoot RAW+ with lens correction on just so I can compare how
> good the profile is vs the manufacturer collection.
>
> With Pentax RAW is RAW.
>
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>
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> On 15 January 2018 at 12:17, Roman Lebedev <lebedev...@gmail.com> wrote:
>
>> On Mon, Jan 15, 2018 at 2:43 PM, Thomas Stieler <lens...@stieler.org>
>> wrote:
>> > Hello!
>> >
>> > I'm considering to contribute correction data for some of my Pentax
>> lenses,
>> > which are not yet part of the lensfun database.
>> > In the documentation on http://wilson.bronger.org/lens
>> _calibration_tutorial/
>> > there is the following advice:
>> >
>> > Make sure that no corrections are applied by the camera (some models do
>> this
>> > even for RAWs)
>> >
>> >
>> > This raises a question for me:
>> Hm, does Pentax also does that, like Sony?
>>
>> > If the lensfun databases contains the right correction parameters for
>> > uncorrected RAW files, what whould happen to photos processed both in
>> camera
>> > and in Darktable, wouldn't the corrections be applied twice and thus
>> lead to
>> > overcompensated results?
>> >
>> > Or does Darktable handle RAW with or without in-camera corrections
>> > differently?
>> In dt there is no special handling for that. So yes, if raws are not
>> actually raws, but partially corrected, then they will be corrected again,
>> if you have actually told dt to do that (the corrections are selectable)
>>
>> TBN, at most we would adjust defaults based on the flag. We would not
>> straight up disable any particular correction just because the file
>> seems to indicate that the correction has already been applied.
>>
>> But this is the wrong list for that i think..
>>
>> > Best,
>> > Thomas
>> >
>> > P.S. Maybe this doesn't apply to my camera (Pentax K-3), because I don't
>> > know if the RAW files are modified by in-camera corrections, but the
>> > question could still be relevant for others...
>> >
>> > --
>> >
>> > Thomas Stieler <lens...@stieler.org>
>> Roman.
>>
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