Re: purpose of DNG profile?
Re: purpose of DNG profile?
- Subject: Re: purpose of DNG profile?
- From: Iliah Borg <email@hidden>
- Date: Wed, 08 May 2013 15:54:53 -0400
On May 8, 2013, at 3:38 PM, Ben Goren wrote:
> On May 8, 2013, at 12:00 PM, Iliah Borg <email@hidden> wrote:
>
>> On May 8, 2013, at 2:43 PM, Andrew Rodney wrote:
>>
>>> your camera may not behave just like the sample used by Adobe to build the DNG profile
>>
>> How much the sensor response should differ to make sample variation visible?
>
> An interesting project to gauge that would be for somebody to collect raw files of images of ColorCheckers shot outdoors at noon on a sunny day.
Lenses and light can make a great difference. Stray light in the camera, too.
I usually profile from several cameras of the same make and model, using a monochromator and no lens. For older CCD cameras sample variation is indeed a factor. For Canon, Nikon, Olympus and Sony cameras made during last 4 years the sample variation is small and hardly can make a huge difference in profiles.
I would be glad to provide hosting and systemize ColorChecker / ColorChecker SG / other targets raw shots.
--
Best regards,
Iliah Borg
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